Category Archives: Darter dragonflies

Spiders, dragons, damsels and reptiles

During my trip to Scotland earlier in the year with my friend we stayed at Boat of Garten in Speyside which is close by Loch Garten in the Abernethy Forest, the primary location in the UK for seeing ospreys. So, as well as the ospreys, one of the iconic ‘must-see’ creatures on my wish list was the pine marten (Martes martes), but we had fairly low expectation of seeing one so we booked an evening with Speyside Wildlife in a purpose built pine marten viewing hide. We spent the evening there with half a dozen other folk and a knowledgeable guide who told us all about the local wildlife. We saw a deer and a badger and then a couple of hours later, well after dark, a pine marten appeared and spent several minutes feeding right in front of us, just a few feet away. So it was well worth the wait! It fed from a branch right outside the window and it was a truly beautiful animal, and what struck me most was its size, it was much bigger than I’d anticipated. Because it was night time and I didn’t want to disturb teh marten there are no photographs, but if you want to see one there are images on Speyside Wildlife’s website if you follow the link above and browse to the Gallery. It was an evening well spent!

An unidentified, but spectacular, floating spider

The morning after the marten hide we set off into Abernethy Forest, stopping off at RSPB Loch Garten to see the resident osprey which duly obliged and perched on the nest. There were lots of other small birds, in particular siskin, mobbing the feeders around the visitor centre, but after the osprey we headed off into the forest on a dragon hunt.

We found a small pool in the forest but the weather was grey and cool so the dragons were still under cover, but a magnificent spider was hunting on the surface. There are tiny dents in the water at the end of its legs where the surface tension is being tested but is still holding firm and supporting the weight of the spider. My knowledge of arachnidis is miniscule so I sent this photograph to the British Arachnological Society in the hope that they could identify it, but they said without dissecting it they couldn’t unambiguously name it.

In the absence of dragons we decamped to another much bigger pool a couple of miles away, and as we arrived there the sun emerged and brought the dragons out. It got very warm very quickly and they appeared in their hundreds:

Four spot chaser – Libellula quadrimaculataNorthern damselfly – Coenagrion hastulatum

The four spotted chaser is common all over the UK and can be seen in my neck of the woods too, but the northern damsel is only found in a few small lochs – or ‘lochans‘ – in Scotland. Consequently I’d never seen this one before. It can be identified by the bottom half of the eye which is green, and segment 2 of the thorax has a black marking resembling the ace of spades.

And while squadrons of dragons patrolled the air, the suns warmth had also enticed out a modern day dinosaur who was patrolling the marsh around the edge of the lake:

Common lizard – Zootoca vivipara

And now the sun was out we headed back to the original pool with increased hopes of finding a white faced darter and lo and behold we found a newly emerged one:

A very newly emerged white faced darter – Leuchorrhinia dubia

This species is limited to just a few sites in England and Scotland, it has declined in recent decades due to habitat destruction, pollution, etc, etc – all the usual reasons why human activity is causing species loss. This was the only one we saw here and I couldn’t get into position to photograph its white face, but I was very pleased to see such a pristine example of a species I hadn’t seen before.

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The Four Spot and the Strawberry

Regular readers of The Naturephile may have noticed numerous references to the loopy weather we have experienced in this part of the world this year, in particular the wetness of the spring and the subsequent brevity of the summer. And you may also have cottoned on to the fact that I have a spider fascination.

Despite the unusual summer weather conditions, later on in the summer and into the autumn I found lots of spiders including two species which I haven’t seen here before. Common garden spider webs (Araneus diadematus) adorned every surface in my garden in the autumn and this particularly nice example was strung between two hawksbeard stems in the local meadow:

Garden spider web bejewelled with dew

One of the most intricate webs I found was that of the labyrinth orb weaver (Agelena labyrinthica), they’re amazing constructions and most of them aren’t very visible until there’s a cold morning and the webs are laden with dew, then it’s possible to see that they adorn all the hedgrows and undergrowth.

The two species I found which I hadn’t seen before were the four spot orb weaver (Araneus quadratus) and the strawberry spider (Araneus alsine, aka orange wheel weaving spider).

The green body of the four spot orb weaver

Both my initial encounters with these little beauties were a little unnerving because I was unaware that spiders with these colours were lurking in my local undergrowth. The four spot flew past me at high speed when I snagged it’s trip line when I was trying to get in position to photograph a male common darter dragonfly:

https://i0.wp.com/farm9.staticflickr.com/8066/8155314987_f0c0087b41.jpgA male common darter dragon – non-arachnid interloper in this post

And a strawberry spider dropped down a few centimetres from my eyes when I was unlocking my gate! All I saw was a bright red bulbous abdomen so my first thought was “Bloody hell, it’s a black widow!”. So I ran to get my camera before it disappeared. Both of these were females and around the same size as a regular garden spider, but as you can see the colours were very different.

The bright red body of the aptly named strawberry spider

Another spider I found in my garden this year was the missing sector spider (Zygiella x-notata). I was intrigued by the name of the missing sector spider and it transpires it comes from the design of the web. If the planar, circular web is a clockface, the part between 11 and 12 o’clock has no spiral threads, so is effectively a ‘missing sector’.

The missing sector spider making a meal out of a cranefly

This particular individual was busy securing a cranefly and it seemed to take great pains to ensure the fly was maximally envenomated. It spent a couple of minutes running around the struggling fly, inflicting multiple bites before wrapping it up in a cocoon of silk and carrying it off to be hung from the window frame and consumed at leisure.

Back yard safari

A couple of posts ago I described my Fenland safari and since then I just happened to have had my own ‘back garden safari’! Lots of colourful creatures have been stopping by to refuel.

I’ve previously expressed concern for the depleted populations of insects, in particular butterflies and dragonflies, due to the mad weather we’ve experienced in the UK this year, but in the last couple of weeks there have been some great sightings outside my back door.


Common darter (Sympetrium striolatum) female perched on the clothes line

The dragons have been late to appear but since the last week in August there have been common darters regularly alighting and migrant hawkers hunting overhead.

And of course it’s that time of year when the arachnids are most in evidence, and my garden is festooned with garden spiders, there are webs attached to every surface: walls, plants, windows… everywhere.

Garden spider female, Araneus diadematus, despatching her prey, a small fly

The female garden spider has a bulbous abdomen which is adorned with the fabulous diadem that gives the species its name. The male is smaller than the female and has a flatter, kite shaped, abdomen, but he also carries the diagnostic markings. A couple of years ago I posted about the perilous love life of the garden spider, suffice to say the sex life of the male can be dramatically and terminally curtailed if he fails to show the lady sufficient respect!


This garden spider male set up home inside the bedroom window – until  the resident arachnophobre found him and relocated him

As well as the spiders, the occasional cricket strolls by, and this little chap was taking shelter under a sunshade from the unseasonally hot weather last weekend:


Oak bush cricket – Meconema thalassinum – the male of the species. The female has a long, upturned ovipositor protruding from her rear

The oak bush cricket is quite a small example of the genre, they are 13-17mm long and are carnivorous, feeding on small insects. They live on the edge of woods and in gardens and appear from July into the Autumn.

Also putting in a welcome appearance was a common buzzard, Buteo buteo:

The buzzard has been one of the birds which has really bounced back since the more stringent controls on of agricultural pesticide use were introduced in the 1980’s. I’d never seen a buzzard until I was in my 20’s and even then it was the occasional sighting in the wilds of west Wales or down in Cornwall. But they can now be seen over all of England – even from my garden.

Hoverfly – Volucella inanis

Hoverfies rarely have common names, they’re simply known under the generic name ‘hoverfly’. And V. inanis is no exception, at least as far as my research reveals. There was great excitement when it first buzzed into the garden because at first glance we thought it was a hornet due to it’s size and its yellow and red colouration. And it was a whopper! They can grow up to 15mm long and this one was one of the bigger ones. It eventually settled and posed rather obligingly on the edge of the rabbit run while I snapped a portrait, and it is a very handsome fly. It has an interesting breeding tactic too laying its eggs in the nests of other social wasps, including hornets – which probably explains its size and colour scheme – where they hatch and feed on the larvae of the host.

Comma – Polygonia c-album

I waited expectantly for this comma to open its wings and show the gorgeously ragged orange symmetry, but it didn’t. So I had to content myself with this silhouette of it perched on a cooking apple.

Turn of the century

After 20 months of posting this is the 100th episode of The Naturephile. The original plan was to post once a week wherever possible and I’ve averaged around five a month, so that stayed roughly on track. I thought I may struggle to find enough subject material and to acquire sufficient photographs of the necessary quality to post as often as I wanted too, but that hasn’t been a problem, so far.

When I started off writing The Naturephile, the idea I may reach a hundred posts never entered my mind, so to mark the moment I’ve trawled back through the archive to find my favourite posts to give them another airing. I’d anticipated it would be a straightforward venture but of course I’d rather underestimated the amount of subjects/species and photographs I’ve written about. But the number of posts was eventually whittled  down to 14.

1) At the end of September 2010 one of natures more brutal rituals was played out right outside my back door involving garden spider courtship. Like other spiders this can easily end up in the death of the male as it did in this case. ‘Araneus diadematus‘ posted on 2nd October 2010:


I really love you… . Male on the left, Shelob on the right

2) A little farther afield are dragon flies, the most common species I encounter are common darters and migrant hawkers. This Common darter appeared in a post on 19th October 2010. I like the symmetry of the fly and the seedhead and the red colour of this male darter against the brown grass.

3) A few years ago when my sister lived in a house (she lives in a kennel now. Only joking, she lives on a narrow boat ;-)) they were digging the garden and this piece of rock turned up. It’s an Acheulian hand axe made from flint and the marks on it are where it was worked with a deer antler. It dates from around 400,000 years ago which means it could have been made by a pre Homo sapiens hominid! It fits beautifully into the palm of my hand and after that many years the edges are still sharp. Even if I was blogging about topiary or book binding I’d have to find a way to slot this in.

4) The winter of 2010/11 was known as a ‘waxwing winter‘. Every winter a  few waxwing (Bombycilla garrulus, Dansk: silkehale) migrate to our shores from Scandinavia to overwinter. But occasionally the weather up there is fearsome so the waxwing migrate in large numbers and we then have a ‘waxwing winter’. And I hope you’ll agree the waxwing is a beatiful  bird:

A group of waxwing perched at the top of a rowan tree in north Cambridge

5) Another consequence of the bitterly cold winter of 2010/11 was that most stretches  of open water were frozen over and our herons (Ardea cinerea, Dansk: fiskehejre) were starving because they couldn’t access their normal food supplies. During this winter  a hungry heron appeared in my friends garden and taking pity on its plight he fed it some fish. And of course one fish supper turned into rather more than one so the heron came to expect it, and if dinner was late it came and tapped on the window to complain to the management.

6) Sea mammals of any description are always a delight to see and photograph and one of my favourite places on the planet for doing that is the Farne Isles situated just off the Northumberland coast.


Atlantic grey seal in the North Sea off the Northumberland coast

Our holiday last year was to Northumberland and I can’t go there without taking in a boat trip to the Farnes where hundreds of Atlantic grey seal were basking on the rocks and generally taking life easy in the water.

7) Closer to home, April last year was hot and sunny and a great time to see songbirds in the countryside. One of my favourite birds is the yellowhammer (Emberiza citrinella, Dansk: gulspurv) and they’re regulars in the hedgerows around Cambridge.


Yellowhammer male  – what a gorgeous colour!

8) A creature I’d never encountered before last year was the great crested newt. My friend told me of a place where they could be found so we ensconced ourselves in the nearest pub in preparation for a nocturnal newt hunt after closing time.

It was a very successful trip, a few pints followed by finding  not only the great crested newt but the other two species of UK newt, palmate and smooth newts.

9) As the year rushes headlong into summer and the butterfly season really gets underway I can spend many an hour chasing our Lepidopterans round the fields trying to get that perfect picture. One of my favourites is the common blue and this is about the closest I got to that perfect picture:

Common blue male sipping nectar – one of the best photographs I’ve ever taken

10) As well as being a top location for marine mammals the Northumberland coast is also home to huge numbers of seabirds so it’s a very happy hunting ground for me!

Just poking your head over the seawall at Seahouses can reveal lots of seabirds including oystercatcher (Haematopus ostralegus, Dansk: strandskade), knot (Calidris canutus, Dansk: islandsk ryle), eider (Somateria mollissima, Dansk: ederfugl), turnstone (Arenaria interpres, Dansk: stenvender) and this  redshank (Tringa totanus, Dansk: rødben).

11) RSPB Fowlmere, to the west of Cambridge is famous for its water rail. On a trip there in December 2011 I was tipped off by a local that a particular hide was good for water rail (Rallus aquaticus, Dansk: vandrikse) and one had been seen there that morning, so off I went to try and see it.


My informant was correct. There was just the one bird there, but it scoured the mudflats in front of us for a whole hour before disappearing into the reeds, giving me plenty of good photo opportunities. I was very pleased with the primeval feel of this image with the bird face on infront of the horsetails.

12) In January this year the weather was absolutely freezing causing a small group of red-legged partridge at Tubney Fen, east of Cambridge, to seek the warmth generated by a mountain of dung:


13) My favourite bird of prey is the kestrel (Falco tinnunculus, Dansk: tårnfalk) and they are always to be seen hovering in the skies over the fields around Histon. I love watching the highly specialised hunting techniques all birds of prey in action, but the kestrel beats them all in my opinion:


A male kestrel showing off all his hunting hardware: talons, flight feathers, eyes and aquiline beak

14) And lastly, I couldn’t write a post like this without including my battling blackbirds. Of all the bird species that visit my garden these are the ones that provide the most entertainment:

My garden gladiators locked in aerial combat

These were a few of my favourite posts, favourite for various reasons: the stories attached, the rarity of the sighting or simply the exquisite natural beauty of the subjects. I hope you like them!

And lastly, I’ve been stunned by the numbers of people from all round the world who read The Naturephile and like it enough to follow it or click the ‘Like’ button. Thanks to everyone for stopping by and enjoying a read, I love sharing the nature from my corner of Cambridgeshire with you!

2011 – That was the year that was

Every month of the year has different conditions which create environmental niches that favour different flora, fauna and stages of life cycles. So as 2011 rushes headlong to its wintry conclusion, for my last post of the year I was going to select a single photograph to represent the month to month changes in our wildlife throughout the year. And that was of course impossible for a number of reasons, mainly because it was impossible to represent any one month with a single image, and also because I have lots of images that I like and I want to share. I eventually managed to whittle the number down to an average of two per month which include a wide range of our native creatures in the UK including birds (migrants and natives), butterflies, moths, flowers, amphibians and fungi. I hope you like them!

January

Every autumn  lots of bird species vacate our shores to head to warmer parts of the world while we endure the cold of winter, and they’re replaced by other species which come from the north to the relative warmth of the UK in winter. Last year the autumn and winter weather in Scandinavia was ferocious and consequently many birds arrived here in larger numbers than usual, including the gorgeous waxwing. Along with the waxwing, redwing and fieldfare came too, as they do every year, and remained until the spring, providing some welcome colour.

On a bright cold January day a lone fieldfare perched in a tree

February

February was cold and the middle of the month saw us taking the children to the coast for our annual spring half term excursion, and this year we headed to the Suffolk coast at Dunwich. Dunwich is a really interesting place for lots of reasons, not least because the wildlife there is rich and varied. One of the harbingers of springtime which I look forward to every year is the flowering of snowdrops, and the woods on the edge of Dunwich were covered in them:


A carpet of snowdrops in the woods at Dunwich Greyfriars

March

By March many flowers were blooming and the fauna was turning it’s thoughts to matters procreational. And this dunnock was no exception:


A dunnock serenading the ladies from a bramble stem on Cambridge Science Park

Dunnocks have a rather to-the-point approach to the art of regeneration. They don’t get together in pairs as most birds do, they form small groups and mate with multiple partners and the males go as far as to remove packets of sperm from the cloaca of females who have been inseminated by rivals prior to passing on their own DNA. No nonsense!


A robin singing for a mate in an alder tree, also on Cambridge Science Park

And of course the birds aren’t the only creatures to get the urge in March. For the past 2-3 years a guided busway has been built between St Ives and Cambridge and as it approaches Cambridge Science Park it passes alongside a lake that is a spawning ground for thousands of toads which live in the adjacent woods and fields. The busway has therefore cut off the toads from the lake and, driven by the unstoppable instinct to reproduce, this pair were trying unsuccessfully to negotiate the sheer walls of the track. For a week in March I would get off my bike every morning on the way to work to help as many of them across as I could find.


The male toad is hitching a lift on the back of the much larger female on the way to the water to spawn

The male toad locks onto the back of the female with his front claws around her chest and he’s not at all keen to relinquish his grip until they’ve reached the water and he’s fertilised her eggs. After which armies of lone toads can be seen heading back the other way.

Fortunately for the toads Cambridge City Council funded the installation of toad tunnels under the busway so next year they should be able to negotitate the track and avoid the carnage which would otherwise have ensued. Hats off to the Council!

April

This month was a real wildlife fest and many types of creature allowed me to take some great photographs. The trees now have shooting leaves so everywhere has that lovely green colour from all the fresh growth.


Windswept male yellowhammer in the top of a hawthorn tree

The yellowhammer is a species which has become less and less common in recent decades as a result of hedgerow destruction and other modern farming methods, but we’re lucky to have plenty of hedgerows still in situ on the outskirts of Histon, and consequently, good numbers of these lovely yellow buntings. The hedgerow this one is on is mature and has old oak and ash trees in so it plays host to alot of bird species including blackcap, chiffchaff, dunnock, common whitethroat and green woodpecker, to name but a few.

Whilst sitting watching TV late one evening in March, what I initially thought was a bat emerged from behind the sofa I was sitting on with my wife. There had been no prior warning of its presence and myself and my wife both levitated off the sofa uttering something along the lines of “What the heck was that!?”. It fluttered into a lampshade where it staid long enough to get a photograph, and it turned out to be an emperor moth:


Our emperor moth inside a lamp. I though creatures like that only lived in tropical rainforests!

Unfortunately, a couple of days later I found her dead (she was the female of the species) still inside the lampshade. I extricated her and measured her and she was 7cm wingtip to wingtip. A magnificent beast.


A willow warbler beautifully framed by new leaves and blossom of the blackthorn tree

These little warblers which weigh on average around 9g have just arrived from southern Africa. I think bird migration is one of the most amazing natural phemonena – how does such a tiny creature navigate and survive a flight across the Sahara and then the Mediterranean? It’s absolutely incredible.


A pair of great crested newts getting ready to mate in a shallow pond – male on the left, more slender female to the right

The great crested newt was probably the highlight of my year. I’d never seen a newt before and in this pond there were great crested, palmate and smooth newts. I turned the flash power down and used an 18-55mm lens and got some reasonably good photographs of the newts underwater. And that at 1am after a few hours in the pub!

May

I’ve spent many a fruitless hour chasing orange spot butterflies up and down the hedgerows of Cambridgeshire, but they never seemed to settle for long enough to get a photograph. But one morning in May I must have timed it just right, they were in the mating mood.


Female orange spot announcing her availability in somewhat unambiguous fashion to a passing male who was just out of shot


Common whitethroat – these warblers also migrate to the UK from sub-Saharan Africa

The common whitethroat breeds in my local fields in good numbers. It’s easy to identify by its song and the way it perches on brambles and low scrub and then flits almost vertically up into the air to alight a few seconds later close to where it took off from and continue singing. This one is a male, he has a blue/grey head whereas the female has a brown head. As well as avian migrants from warmer climes, at this time of year many species of dragonfly are emerging:


Scarce chaser dragonfly at Milton Country Park

I like dragonflies. In the days of the dinosaurs there were dragonflies with a 75cm wingspan! They are fun to photograph (and often, not too difficult) they look awesome, and they have very interesting life cycles. My scarce chaser sat on a seed head for several minutes whilst I stood a few feet away photographing other dragons and damsels, occassionally he took off to circle the pond before returning to the same spot where he let me get to within around 50cm to capture his portrait.

June

In a normal year the weather will be warming up  nicely by June and flowers and insects and birds should be in abundance. But 2011 wasn’t a normal year, April was unseasonally warm which kick started everything, but the rest of spring and summer were cold and this had dire consequences for many butterflies and other species. One of the few that I did see in reasonable  numbers this year, although not as many as last year, was the large skipper.


Large skipper feasting on the nectar of a thistle

The marsh woundwort is so called because it has been applied to wounds to assist the healing process. I don’t know what the medical basis for that is, maybe it has antispetic properties. It  has a beautiful flowerhead and is one a good number of wild flowers growing in the drainage dikes on the local farmland around Cambridge.

Marsh woundwort poking it’s lovely head out of a drainage ditch which is full of various wild flowers every year

July

I found this splendid looking cricket lurking in the grass in a field on the edge of Histon. I first thought it was a very green grasshopper until I looked more closely at the photograph, and it turned out to be a Roesels bush cricket. It is an introduced species from mainland Europe which until recently was only found in the most southerly parts of England. There are two varieties and this is the long winged one which can colonise further afield faster than its short winged cousin, and is now as far north as Cambridgeshire and beyond.


Long winged Roesels bush cricket

This was the first of its kind that I’d seen and a few days later another one appeared on a blind in my house, so I guess thay can’t be that uncommon in this region now.

A pair of juvenile linnets

Before I got out walking in my local countryside around Histon I can’t remember the last time I saw a linnet, but they breed here in good numbers and in the winter flocks of many tens to hundreds can be seen on farmland around and about Histon. Linnet are finches which feed on seeds and the adult males are splendid with a cerise breast and a crimson spot on their foreheads.

August

When I was at school, many years ago, my Dad would feed the birds in the garden and it wasn’t particularly unusual to see the occasional bullfinch.  But mainly as a result of persecution their numbers declined dramatically through the 1970’s and 80’s and I didn’t see one for years. The males are beautiful birds and I’ve been after a good photograph of one for a long time. And finally…


A male bullfinch crunching seeds at RSPB Fen Drayton

I love this picture – so far it’s the first and only half decent one I’ve managed. Hopefully I’ll get a few more to share with you in 2012.

Later in August, we were on holiday in Northumberland, and amongst the many gulls and other seabirds on the beach at Seahouses was this redshank. I think it’s nature at it’s aesthetic best!


A lone redshank looking for nourishment in the rockpools at Seahouses

September

The biggest garden spider I’ve ever seen – she was around 4cm across

Another of natures harbingers, this time of autumn. My garden fills up with these polyocular purveyors of terror in September, and this lady was huge. She was 4cm across and was big enough to distract my son from a telling off. ‘Dad, there’s a big spider in my window‘ was an imaginative and very effective way to divert my attention from the misdemeanour of the moment. I ran to get my camera and I had to lay horizontally out of the bedroom window to take this photograph, as a result of which I couldn’t stay still for more than a few seconds!

October

After the coldest summer for 18 years we then had a mild autumn which meant that many creatures could be found out and about long after they have normally  migrated or hibernated, or died off. Swallows and swifts were still being seen into October and a bumblebee flew past my lab window one day last week. During a visit to Milton Country Park, on the northern edge of Cambridge, on 28th October, to see what winter wildfowl had arrived, there were some winter visitors including tufted duck, gadwall and widgeon. But the pontoon I was stood on had around half a dozen common darter dragonflies on it along with several species of damselfly in the surrounding reedbed and a lone migrant hawker patrolling the air which took a common darter and butchered it on the wing right over my head. Dragonflies can be seen late in the year when the weather permits, but even so I was surprised to see so many at the end of October.

A pair of common darters mating in the late autumn sunshine

November

One of my November excursions took me to RSPB Fowlmere, between Cambridge and Royston, which is renowned for its water rails. I don’t think I’d ever seen one before but I was tipped off by a fellow naturalist that there was one in front of a particular hide, so I headed off there and there it was, busy foraging in the pond for the whole hour I sat there. It was very murky so the photographic conditions were difficult, but I managed to get a couple of decent pictures and I particularly like this one:

A water rail in the primeval swamps of Cambridgeshire!

And another of my trips in November was to Norsey Wood in Essex which is a very different ecosystem to Fowlmere, consisting of ancient oak, beech and birch wood. So in autumn the forest floor is a really good location for fungi and this fly agaric was one of a large group growing out of the leaf litter.


Fly agaric mushroom amongst the fallen beech leaves of Norsey Wood

December

And finally, a wildlife success story is the long tailed tit. Until the last 10-15 years I only saw these occasionally but they now seem to be common, in direct contrast to so many other species of bird whose numbers are declining. I regularly see flocks of long tailed tits on the feeders in my garden and in the hedgerows and woods around Histon. They’re gorgeous little birds and I love watching a flock of them follow each other one after the other along a hedgerow before bunching together when they have found a food  source and then heading off again in line astern.

A long tailed tit in the hedges along Guns Lane in Histon

I stood quietly for several minutes watching the flock of around 15 birds that this one belonged to and they didn’t seem at all bothered by me as they picked insects from the trees.

So there you have it. 2011 in pictures. If you had the stamina to get this far, thankyou and I hope you enjoyed it.

Best wishes for a very happy Christmas and a peaceful and successful New Year from The Naturephile!

Autumnal Anisopterans

Yesterday, 28th October, was one of those glorious sunny autumnal days where the air was fresh but the temperature was raised by bright sunshine, and I’d heard that the winter migrants were arriving on the lakes at Milton Country Park on the northern edge of Cambridge. So I took my camera to work and headed there for a stroll at lunchtime in the hope of snapping a teal or wigeon or perhaps a more unusual visitor. Several waterbirds were on parade including these cormorants:

Several migrant duck species were there too, including wigeon (Anas penelope, Dansk: pibeand), the duck with the chestnut head in the background of the cormorant picture is a male wigeon, tufted duck (Aythya fuligula, Dansk: troldand):


A male tufted duck resplendent in his pied plumage and bright yellow eye

…and gadwall (Anas strepera, Dansk: knarand).

What I didn’t expect to see though, certainly not in the kind of numbers present, were dragonflies. It’s  nearly November and the weather has started to get more autumnal but the warm weather up to now must have suited these airborne predators. In particular common darters (Sympetrium striolatum) were conspicuous, six at one time including two mating pairs. It’s always a treat to watch dragonflies but especially on a sunny day at the end of October, living uo to their name and darting about making a loud low frequency buzzzing noise .

Stunning symmetry of a pair of mating common darters

The darters were sunning themselves on the fence lining a viewing jetty on the edge of a lake and while they were busy warming and copulating a migrant hawker (Aeshna mixta) was patrolling the adjacent reedbeds. All the dragons were pretty much oblivious to my presence unless I ventured too close then they would rise into the air, the copulating couple in tandem, only to return to pretty much the same spot with 30 seconds or so.


Migrant hawker

Every so often one or more of the common darters would chase the hawker away until it lived to its name and plucked one of them out of the air and butchered it whilst flying around our heads, scattering the inedible parts around us. After its aerial snack it headed up into the treetops and disappeared.


The hawker missed a trick. It went to alot of effort catching its darter on the wing when it could have had twice as much protein if it had spotted this pair. But I’m glad it didn’t!

Hawkers and darters

A lunchtime visit to Milton Country Park on the northern periphery of Cambridge this week to look for dragonflies turned out to be an hour well spent. For the first 10 minutes they were conspicuous by their absence but then a brown hawker appeared over a small pond, very distinctive with it’s rufous wings shimmering in the sunlight. I tried to photograph it in flight but it proved beyond my talents. Even though there were three or four whizzing around the pond at any one time  I moved to a place under a tree which was overhanging the water and knelt down and waited. Within a couple of minutes a female brown hawker alighted on a log floating in the water and started ovipositing:

She seemed to be completely unfazed by my presence and busily worked her way along the log probing below and above the waterline for a suitable crevice to secrete her eggs.

She was there for around 10-15 minutes in total and every so often she took off but seemed to always to return either to her log or to a spot on the pond bank 5-6 feet from me. Even when my friend, Joe, came to see she still went about her business taking little notice of us.



She eventually departed along with all the other hawkers so we strolled along to a different location which was a wooden jetty protruding into another of the lakes. It’s surrounded all the way by dense rushes and has previously been a good place to see dragons. And that didn’t let us down either. We saw only two species, a pair of blue tailed damselfy and numerous common darters. All males. The males of this species are easily distinguished from the female as they are a glorious red and gold compared to the less vibrant green of the female.

The male of the species…

…and the lady:

There were several male common darters perched along the wooden jetty (the female above was snapped in Histon a couple of weeks ago), they were also happy to let us get up close and would occasionally dart away suddenly to chase a prey insect before returning to the same spot.


The compound eyes of the common darter – I like the depth of field in this picture rendering just the dragon in focus

When I was out for a stroll with my friend, David, who’s a bit of a dragonfly expert, last weekend, we found a dead migrant hawker dragonfly. We were marvelling at the complexity of the compound eye and he told me that a chap in the States had counted the facets in the eye of an American species, and apparently he got up to around 28000! He must have had a string of long winter evenings to fill. But dragonflies are amazing creatures and I can see how they inspired him to want to do it.

I also took a couple of nice bird photo’s on this trip but I’ll save those until next time.

Dragonfly discoveries

Dragonflies are amazing insects which it seems can be seen just about anywhere. In 2010 I’ve even spotted them over my garden in Histon. It occurred to me I should put some effort into photographing and learning about them as I sat with my family eating a picnic on a bench overlooking the fountain in the Cambridge University Botanical Gardens. Numerous small, magnificently bright red, individuals were whizzing around the pond, and a few big blue ones a short distance away from the pond (the small red ones were a species of darter, and the big blue ones were hawkers – probably migrant hawkers). I attempted to photograph these for subsequent identification but alas my photographic skills were’t up to the job on that occasion. Despite that I looked up some information and lots of great pictures at http://www.dragonflysoc.org.uk/home.html. This is a great website and started me off on a journey of discovery which is now pretty much finished this year but which I plan to resume as soon as possible next year.

Subsequent walks around Milton Country Park and the fields north of Histon provided lots of opportunities to see many species of dragonflies and damselflies:


Female brown hawker sunbathing on a birdbox at Milton Country Park

Migrant hawker male. The yellow ‘golf tee’ on segment S2 is diagnostic 

Dragonflies originate from species which fossil records date to the Carboniferous period, around 300 million years ago, and could have a wingspan up to 70cm! They comprise the taxonomic sub-order known as ‘Anisoptera‘ and are part of the order ‘Odonata‘ which also includes damselflies (Zygoptera) and another group which is virtually extinct called ‘Anisozygoptera‘. There are now around 5300 species of dragonflies of which approximately 40 reside in the UK.

Dragonflies lay eggs underwater either loose, protected by a hygroscopic gel, or inside plants. The eggs of some species can lie dormant over winter and resume development when temperatures rise in springtime. Time to hatching is temperature dependent but is usually around 2-5 weeks and the larvae develop in water, all British species overwinter once as larvae but time to adulthood can be up to 5 years. Metamorphosis from larva to adult is triggered by increasing day length and temperature in spring, and includes the transition to breathing air and growth of their incredible compound eyes. Each eye is made up of around 29000 individual elements called ‘ommatidia‘. They also possess three addtional ‘simple eyes’ call ‘ocelli‘ which are sensitive to light intensity and assist in controlling flight via direct nerve connections to the flight muscles. Dragonflies have excellent colour vision and can also see ultra violet light. It makes me wonder what the neural activity behind all that optical prowess is capable of: are dragonflies merely responding directly to visual stimuli via reflex arcs, or is there more sophisticated image processing going on?


Common darter, immature male

Common darter, female. Note the compound eye.

Dragonfly larvae are ambush predators feeding on moving prey including other insect larvae, snails, small fish and tadpoles. Adults catch other insects in flight, holding their legs out in front like a bread basket to scoop prey from the air such as flies, flying ants, mosquitoes and even other, smaller, dragon flies.

Newly emergent dragonflies are powerful fliers and disperse widely. They are often seen a long way from water and can even cross seas. They reach maturity after a few days to a few weeks, a process also controlled by temperature, when the males will congregate at vantage points near water where females come to oviposit. The male will grasp the female around the head with his anal appendages and attempt to mate with the female by swinging her round to form the ‘copulatory wheel’ enabling him to pass a packet of sperm from the secondary male sexual organs located on his second abdominal segment to the female sex organs located on her eighth abdominal segment. After mating, sometimes under the guard of the male, to ensure his sperm is not displaced by another male, the female will oviposit underwater. And so the cycle begins again.


Broad bodied chaser – female