Category Archives: UK wildlife

Diapause and Diminishing Diversity

Posted on November 9, 2012 | 38 comments

Capreolus capreolus, aka the roe deer, is native to the UK and can be seen in good numbers in the Fens. During an evening stroll there in July I encountered several. As well as being delightful to look at they have some interesting reproductive biochemistry. The roe deer rut takes place in July and August but the fawns are not born until the following May or June, nearly a year after the rut. The length of roe deer gestation had puzzled zoologists for a very long time and then they discovered that the roe undergoes delayed implantation, or ’embryonic diapause‘.

A roe deer peering at me as I meandered around Wicken Fen

But that wasn’t the end of the story. It was assumed that hormonal messages from the mother would tell the dormant fertilised egg, or ‘blastocyst‘ when it should implant into the endometrial layer of the uterus, but the search for the maternal hormonal trigger which has been observed in other mammals drew a blank. It transpires the trigger is a novel mechanism whereby the embryo, which at that stage consists of around 30 cells and has its own internal timer mechanism, secretes a messenger molecule called ‘rdPAG’ (roe deer Pregnancy Associated Glycoprotein) which precipitates a maternal hormone cascade of oestrogens that initiates the second stage of the pregnancy with implantation of the embryo. This is a remarkable piece of biology because it is orchestrated by the embryo, not the mother, and ensures the fawn is born during the favourable weather conditions of the summer thereby guaranteeing it sufficient time to prepare for the winter.

A visit to Wicken Fen always provides multiple unique photographic opportunities such as this pair of grey herons whose paths crossed, almost on a collision course:

Wicken Fen was mentioned in a BBC News article a couple of days ago about the importance of the Fens as a wildlife haven. The article is about a study into the biodiversity of fenland since 1670. Apparently, since the start of the study period 100 species of birds, bees and butterflies have been lost from the Fens and in total 504(!) rare species have not been recorded there in the last 25 years. A moments comtemplation on that rate of biodiversity loss is terrifying, and the implications of it even more so. It boggles my mind that the political decision makers, who are aware of all the environmental devastation, don’t appear to give a damn about it. Or at least not enough to want to do anything about it.

Despite that the Fens are still a very important refuge for endangered species, which I can vouch for based on my observations made whilst wandering around Wicken. The Fens are much maligned but are a unique and important haven for many species of all kinds of wildlife.

In order to manage and maintain the flora of the Fen which then provides shelter and sustenance for a multitude of other species, horses and cattle have been installed there, one of which is this magnificent chap:

This image doesn’t really do him justice, he is absolutely enormous – like a minibus on legs!

38 Comments

Posted in Birds, Countryside walks, Deer, Mammals, Ornithology, UK wildlife, Wicken Fen

Tagged Ardea cinerea, blastocyst, Capreolus capreolus, delayed implantation, embryonic diapause, Fens, flora, grey heron, hormone cascade, rdPAG, reproductive biochemistry, roe deer, roe deer Pregnancy Associated Glycoprotein, roe deer rut, Wicken Fen

Passerines and Ponies

Posted on November 2, 2012 | 26 comments

One weekend in the middle of July we took off down to the New Forest for a couple of days. The New Forest was originally a hunting forest for King William in the 12th century and 800 years later was eventually awarded National Park status in 2005. It lies along the south coast of England in Hampshire in a triangle delineated by Southampton, Salisbury and Bournemouth, and covers around 150 square miles, which in the context of southern England is a fairly sizable area. As the name suggests it consists of ancient forest which is interspersed with large areas of heathland and it’s renowned for its wildlife, being home to many less abundant species of birds, butterflies, mammals and reptiles.

One day while we were there we found a secluded spot on the edge of Stoney Cross to eat our picnic. We parked the car adjacent to some woodland where the canopy was so dense it was nearly dark on the forest floor and impossible to see in. There were lots of small birds darting around and I could see that some of them were chaffinches, but there were others that it was simply too dark to see properly and identify. So when one of the kids had finished their sandwich and there was some left over I broke it up and put it on a rotting tree stump on the edge of the forest and sat in the boot of the car with my camera. Within seconds the stump was full of birdlife, and now I could see them properly most of them were chaffinch:

Hen chaffinch (Fringilla coelebs, Dansk: bogfinke) eyeing up a crusty morsel

It was challenging photographically because it was starting to rain and as you can see above, looking into the forest it was very murky indeed, so I increased the ISO to 800 and hoped the shutter speed would be fast enough. Shortly after the chaffinch descended, there were great tits (Parus major, Dansk: sortemejse), marsh tits (Poecile palustris, Dansk: sumpmejse), a robin (Erithacus rubecula, Dansk: rødhals) and my favourite of them all:

Nuthatch (Sitta europaea, Dansk: Spætmejse)

I like nuthatch and I rarely get to see them. Occasionally my parents have one visiting their feeders in the winter but it’s a long time since I saw one in the wild, so this was a treat. And this one liked sausage roll:

The nuthatch is a woodland bird which nests in holes in deciduous trees and is the only bird I can think of which I have seen walking headfirst down a tree. The marsh tit is also a bird of dense deciduous woodland which nests in cavities in old and rotten trees, so it was no surprise to see either of them in this particular spot. But I can highly recommend taking an old baguette or sausage roll to entice them down out of the tree canopy to get a good view.

Marsh tit (Poecile palustris, Dansk: sumpmajse)

The most famous and charismatic residents of the New Forest are the wild ponies. They are common in the forest and can be seen wandering around the towns and villages:

My daughter making friends with a New Forest pony

We were standing on the terrace of an ice cream shop tucking into our soft-ices as a small herd of ponies sauntered down the road from the direction of the car, top left. They spotted us and three or four of them came up the slope to join us on the terrace and attempted to share our ice creams! They are completely wild but they’re accustomed to humans being about. But if you happen to be in the forest when a herd come thundering past at high speed it’s an alarming experience, as we found out shortly before this picture was taken. They came by around 25m away and a few minutes later came back even closer. I’ve stood on the rail at Cheltenham watching the Gold Cup as the horses come past on their way to the finish line, and it’s extremely exciting – but it’s a lot more exciting when there’s no rail and no jockeys to keep them in a straight line!

26 Comments

Posted in Birds, Garden birds, New Forest, Ornithology, Songbirds, UK wildlife, Wild horses

Tagged bogfinke, Bournemouth, chaffinch, Erithacus rubecula, forest, Fringilla coelebs, great tit, Hampshire, heathland, marsh tit, National Park, New Forest, New Forest ponies, nuthatch, Parus major, Poecile palustris, rødhals, robin, Salisbury, SItta europaea, sortemejse, Southampton, spætmejse, Stoney Cross, sumpmejse

Flowers and frogs at Milton Country Park

Posted on October 27, 2012 | 21 comments

Not long after my lunchtime spin around Cambridge Science Park I paid a visit to Milton Country Park which is about a mile from where I work, as the crow flies. Wild flowers were everywhere, the sun was out, and there was lots to see including a family of treecreepers (Certhia familiaris, Dansk: træløber). Prior to this I’ve only seen treecreepers individually but this time a whole family of at least five birds was flitting around a tree trunk before flying to an adjacent tree. Treecreepers are fun to watch, they begin hunting low down on a tree trunk and climb up it in a spiral pattern to ensure they don’t miss any insects lurking in the crevices of the bark, they are very aptly named. I didn’t have my long lens with me so I couldn’t get any photographs of the treecreepers, but I did capture some gorgeous flowers on this outing:

Scarlet pimpernel flowers

I’ve never noticed scarlet pimpernel (Anagallis arvensis) growing around Cambridge before but I’ll be happy if it spreads. The flowers, which were less than a centimetre across, open in the morning and close mid afternoon and were shooting from amongst the short grass. It’s common in England but less so in Scotland.

The purple and yellow flowers of the woody nightshade flowers (Solanum dulcamara) were illuminating the undergrowth:

Woody nightshade

The flowers of the woody nightshade are beautiful and eventually give way to berries which are green before they ripen into a lovely deep red colour. As the colour may suggest they are toxic, the main ingredient being an alkaloid called ‘solanine‘ (an alkaloid is a plant-derived nitrogen containing compound which can exert a physiological effect on humans. More infamous members of this category include opium, cocaine and marijuana).

The glycoalkaloid ‘solanine’ found in members of the Solanaceae family including the nightshades and potatoes

Solanine is also the active ingredient in deadly nightshade, Atropa belladonna, and is the compound which makes green potatoes toxic! The green pigmentation is due to chlorophyll which is produced when potato tubers become exposed to light and is not therefore toxic, but it is produced along with solanine. Solanine isn’t degraded by cooking so eating lots of green spuds is a bad idea.

As you might expect, solanine has physiological properties which make it a useful compound. Ancient Greeks would take it before consulting the priestess Pythia, the Oracle of Delphi, to utillise its halucinogenic properties. And Italian ladies used the sap of the deadly nightshade in days of yore to dilate their pupils as they believed this made them more beautiful. Hence the specific name of the deadly nightshade ‘belladonna‘ (‘beautiful lady‘ in Italian). It was also used by torturers as a medieval truth drug to extract confessions. In more recent and enlightened times therapeutic doses have been used to treat a range of conditions incuding inflammatory eye diseases such as uveitis, and it has also shown inhibitory properties when applied to melanoma (skin cancer) cells. It’s amazing stuff!

Common frog – Rana temporaria

A frog hopped across the path in front of me and hunkered down in the undergrowth to avoid being spotted and/or predated, so I got up close to capture some portraits. I was within 8-12 inches and it didn’t flinch, so I took half a dozen pictures before it hopped off deeper into the bush.

Rosebay willowherb – Chamerion angustifolium

At the edge of a lake a stand of rosebay willowherb was just coming into flower. The flower spikes and leaves of willowherb have been used to treat grumbly bowels and apparently it makes a good mouthwash too. The willowherb was interspersed with spears of aarons rod:

Aarons rod – Verbascum thapsus

This aarons rod was a very fresh example and was only just coming into flower but when in full bloom the spear is full of yellow flowers from the leaves to the apex. They have been lining my route to work since June and there are still some hardy individuals lingering on into the autumn. Aarons rod has been used medicinally as an expectorant to treat coughs and for numerous other conditions including colic, eczema, boils and warts. It’s a very versatile plant.

Tufted vetch – Vicia cracca

Many shrubs and bushes were festooned with the flowers of tufted vetch which is a European native and has also been introduced to the Americas where it is a weed. The flower heads were several inches long and a rather fetching blue/purple colour. It grows over other plants by shooting out tendrils which grasp stems and provide an anchor for further encroachment. It can grow up to 2m tall and can strangle smaller plants. But the flowers are lovely

21 Comments

Posted in Amphibians, Birds, Countryside walks, Flora and fungi, Frogs, Milton Country Park, UK wildlife, Walks around Cambridge and Histon, Wild flowers

Tagged aarons rod, alkaloid, Anagallis arvensis, Ancient Greeks, Atropa belladonna, belladonna, birds, Cambridge Science Park, Certhia familiaris, Chamerion angustifolium, chlorophyll, common frog, deadly nightshade, expectorant, flora, green potatoes, halucinogen, inflammatory disease, melanoma, milton country park, Nature, Oracle of Delphi, poisonous flowers, Pythia, Rana temporaria, rosebay willowherb, scarlet pimpernel, solanine, Solanum dulcamara, træløber, treecreeper, truth drug, tufted vetch, uveitis, Verbascum thapsus, Vicia cracca, wild flowers, wildlife, woody nightshade

Correction – Volucella zonaria

Posted on October 18, 2012 | 14 comments

In my post ‘Backyard Safari‘ from September 15th I included this photograph of a magnificent hoverfly which I identified as Volucella inanis:

I subsequently received a comment from Roger Morris of the Hoverfly Recording Scheme (HRS) to let me know that I had incorrectly identified the fly and it is in fact Volucella zonaria. So thanks to Roger for putting me straight.

When it appeared in my garden I mistook it for a hornet, it’s our largest hoverfly and I’ve seen it described as a ‘hornet mimic’. The adults feed on flowers such as buddleia which may be why it appeared in my garden, and the larvae feed on the detritus which accumulates in the cavity at the bottom of wasp nests. It wasn’t recorded as resident in the UK until the 1940’s when it appeared around London and then spread across the south of England to the west country. It’s population is still most dense in the south east but it is regularly recorded in the east Midlands with occasional recordings in the northwest of the country.

14 Comments

Posted in Diptera - two winged flies, Hoverflies, Insects, UK wildlife

Tagged Diptera, entomology, hoverflies, Hoverfly Recording Scheme, insecta, Nature, two winged flies, Volucella zonaria, wildlife

Flowers and foliage

Posted on October 10, 2012 | 24 comments

The greatest thing about a sodden Springtime was the abundance of bloom that resulted. So I spent alot of time this year recording the wild flowers and foliage that flourished in the wake of the deluge.

Some years ago I attended a lecture in which the speaker said that due to modern farming methods which involve the use of mechanisation and toxic chemicals to create a sterile monoculture, verges and drainage ditches have now become an invaluable seed bank where many of our wild flowers can still prevail. Without these unpolluted conduits criss-crossing the countryside the flora seeking refuge there would be even more threatened. This idea seems to be born out in my local area as the drainage ditches are indeed full of wild flowers year on year.

Hedge woundwort – Stachys sylvatica

Hedge woundwort has lined the field margins and ditches in greater abundance this year than in previous years, its delicate purple flowerheads, growing up to around a metre tall, poking over the top of the ditches. It’s a lovely flower and it gets its name from its preference for hedgerows and because the crushed leaves were traditionally applied to wounds to stem bleeding.

Hawthorn flowers lined all the hedgerows ealier in the year and heralded a glut of berries which are currently providing rich pickings for the birds, and will continue to do so well into the colder months.

Hawthorn blossom – Crataegus monogyna

The October 2012 edition of British Trust for Ornithology’s BirdTrack reveals that the migrant redwings (Turdus iliacus, Dansk: vindrossel) should be arriving here from Scandinavia any day now and will be followed closely by the fieldfare (Turdus pilaris, Dansk: sjagger), and the hedges fulls of haws will help to replenish their fat reserves after the migration across the North Sea. I think I saw my first redwing over Histon on Sunday, they have a characteristically undulating flight during which they fold back their wings and form a teardrop shape, which is what my sighting today was doing. So the fieldfare should be along soon too, according to the BTO.

Oxeye daisy – Leucanthemum vulgare

Oxeye daisies are my Mother’s favourite flower and she has been pestering me to publish a picture of one. This year they lined my cycle route to work alongside the Cambridge Guided Busway in their thousands so I’m finally able to complete my commission. So, Ma, this one’s yours!

The wild flowers have been spectacular but the leaves and some of the trees have also been contributing their own splash of colour to the countryside such as the cluster of oak leaves below.

(Dramatic interlude: Wow, the first goldfinches (Carduelis carduelis Dansk: stillits) arrived on my niger seed feeder a couple of days ago after being absent through the summer and until a minute ago there was an adult and a late fledgling feeding there. I just caught a blurr out the corner of my eye as I was writing this post and looked up just in time to see a sparrowhawk (Accipiter nisus, Dansk: Spurvehøg) swoop through a gap in the buddleia bush next to the feeders, the goldfinches fled but it all happened too fast to see if the hawk was successful. It was all over in less than a second!)

Back to the oak leaves though, they were lovely colours, almost autumnal. Oak trees are amazing organisms, in fact they are substantially more than organisms, they are ecosystems in their own right. They live to be several centuries old and when coppiced or pollarded (pollarding is pruning back a tree to the top of the trunk to promote new branch growth, compared to coppicing which is pruning it back to ground level), but there are numerous examples of oaks living for 1000-1500 years. And they become home to hundreds of other species of fungi, lichens, insects, birds and mammals.

Oak leaf cluster – Quercus robur – the English oak

And right next to the oak was this gorgeous, delicate field rose. The field rose, Rosa arvensis, grows in hedges and has white to cream coloured flowers and lovely golden yellow anthers. It flowers later than the dog rose (Rosa canina) which has pink flowers and the leaves are smaller. Later in the autumn the flowers turn into bright red hips which provide food for birds as well as humans. When I was a kid we used to have rosehip syrup which was sweet and delicious and I’ve been toying with the idea of trying to make some. If I succeed in creating something pleasant I’ll post the recipe here.

Without doubt my favourite wild flower is the field scabius (Knautia arvensis). I think they’re utterly beautiful and if I have a camera to hand I struggle to walk past one! Fortunately for me the field margins around here are replete with them so I’m rarely short of photographic opportunities.

The glorious flower of the field scabius

And from side on:

The hue of the flowers can vary from a pale pastel shade to quite dark purple. Each flower contains male stamens which can be seen protruding from this flower from between the female florets. The stamen consists of the filament (the stalk) and the anther (the pollen bearing part at the end of the filament). The stamens die back before the female florets mature in order to prevent self-fertilisation. Field scabius is named afer the German botanist Dr Knaut and has historically been used to treat skin ailments such as scabies and eczema.

24 Comments

Posted in Birds, Birds of prey, Buxhall Farm Histon, Countryside walks, Flora and fungi, Garden birds, Hawks, Ornithology, Songbirds, Trees, UK wildlife, Walks around Cambridge and Histon, Wild flowers

Tagged Accipiter nisus, agrochemicals, bird of prey, BirdTrack, British Trust for Ornithology, Cambridge Guided Busway, Carduelis carduelis, coppicing, Crataegus monogyna, dog rose, drainage, English oak, field rose, field scabius, fieldfare, flora, goldfinch, hawk, hawthorn, hedge woundwort, herbal remedy, Knautia arvensis, Leucanthemum vulgare, medicinal herbs, migration, migratory birds, Nature, oak, oxeye daisy, pollarding, Quercus robur, redwing, Rosa arvensis, Rosa canina, rosehips, seed bank, sjagger, sparrowhawk, spurvehøg, Stachys sylvatica, stillits, thrushes, Turdus, Turdus iliacus, Turdus pilaris, vindrossel, wild flowers, wildlife

Titchwell birds – the final episode

Posted on October 7, 2012 | 24 comments

I’ve posted several times with pictures from my trip June to Titchwell on the north Norfolk coast but I’ve now exhausted my photo collection from that trip so this is the last one. There was a terrific number of bird species present the day I was there including ducks, waders, raptors, passerines and gulls, but the wildlife wasn’t confined to birds, a wall brown butterfly and a chinese water deer also putting in appearances.

Gulls are many and often not-so-varied and can be easy to overlook: “What’s that bird?”, “Oh it’s just a gull”. But I like gulls and and it’s always good to have a new species identified and on this trip it was the little gull (Hydrocoloeus minutus, Dansk: dværgmåge). At first glance the little gull looks like a black headed gull, but it is noticeably smaller:

Little gull in winter colours – the summer plumage includes a completely black head

The other obvious difference between the two species is the colour of the beak which is black on the little gull and red on the black headed. It may also be mistaken for a tern as it swoops down on the water in a similar way to a tern but it’s not fishing it’s picking food from the surface of the water. I haven’t seen other gulls feed in this way.

Black headed gull (Larus ridibundus, Dansk: hættemåge)

The black headed gull is common and I see large flocks of them feeding in the fields around Cambridge in the winter, unlike the little gull which is a rare breeder in the UK and a passage and winter visitor on it’s way to the Mediterranean.

Grey heron (Ardea cinerea, Dansk: fiskehejre)

Stalking the shallows were several grey herons searching for fish and amphibians. The heron is a very effective predator unlike the pied wagtail perched just a few metres away serenading the comings and goings of serried ranks of twitchers passing to and from one of the hides:

Pied wagtail (Motacilla alba, Dansk: hvid vipstjert)

This wagtail is an adult male, his colours are much darker and the black bib more extensive than the more delicately shaded female. The pied wagtail is a resident and migrant breeder and I regularly see them patrolling lawns, meadows and carparks with their characterisitic twitching tail.

The one bird which I knew could be seen at Titchwell, but which I also knew was very elusive, so I didn’t really expect to catch a glimpse of it, was the bearded tit (Panurus biarmicus, Dansk: skægmejse). It’s one of those birds that I’ve seen pictures of and thought it almost looks unreal, like a childs drawing of an imaginary colourful songbird. A notion which seemed to be corroborated when I looked in my Collins field guide and it wasn’t listed! It transpires that it was listed, but as the ‘bearded reedling‘ instead of the ‘bearded tit‘, and it’s actually more closely related to the larks than the tits, to which it’s resemblance is only superficial. Despite the alternative name in my field guide it is listed on the British Trust for Ornithology ‘BirdFacts‘ website as the ‘bearded tit‘

Bearded tit juvenile

The bearded tit is resident in the UK but confined to the southern and eastern extremities. However, I did see some and even managed to get a photograph, albeit a not very good one(!). This one is a youngster, identified by the black eyestripe which differentiates it from the female, and the black patch on the nape which is absent in both adult genders. Of all the birds I saw on this visit the bearded tit (or reedling) was probably the highlight.

24 Comments

Posted in Coastal walk, Ornithology, RSPB reserves, Seabirds, Songbirds, Titchwell, UK wildlife

Tagged Ardea cinerea, bearded reedling, bearded tit, birdlife, black headed gull, British Trust for Ornithology, BTO, BTO BirdFacts, coast, dværgmåge, fiskehejre, grey heron, gulls, hættemåge, hvid vipstjert, Hydrocoloeus minutus, Larus ridibundus, little gull, Motacilla alba, Nature, Norfolk, ornithology, Panurus biarmicus, pied wagtail, Royal Society for the Protection of Birds, RSPB, RSPB Titchwell, skægmejse, Titchwell, wildlife

Histon wildlife

Posted on September 29, 2012 | 15 comments

I’ve been meandering around the country over the summer so my local flora and fauna have been a tad neglected here. So here are a few of my favourite photographs from Histon.

Wild flowers and grasses shot up to shoulder height in no time at all through the spring and into the summer and everywhere was lush and verdant, watered by the seemingly endless rain that started a few days after the hosepipe ban at the beginning of April, and carried on until early July. The rains were good for the greenery but not good for butterflies and other insects, so it was good to see the large skippers emerge at the end of June.

Large skipper – Ochlodes faunus

The large skipper ususally emerges in June and July, so the earlier stages in its life cycle must be particularly well water-proofed to have survived the spring! The caterpillars feed on orchard grass (Dactylis glomerata) which is common in meadows and hedgerows, and the adults seek nectar from a range of flowers including birdsfoot trefoil, dandelion, yarrow and field scabius. All of these are common in my local fields which explains their annual presence around here.

Small skipper – Thymelicus sylvestris

Both the skippers here appear to be females, the genders are differentiated by the presence of ‘androconica‘ on the forewings of the males. These are lines of dark, specialised pheromone producing cells which appear to be absent on both these butterflies.

Field poppies – Papaver rhoeas

A journey through the countryside in July and August was a gorgeous sight this year due to the abundance of poppies. The red field poppy, also called the ‘Flanders poppy’ is, of course, the symbol of remembrance in the UK for the slain of the two World Wars. They seemed to be everywhere, and fields which would normally be plain green were a sea of red, and my local fields were no different. It transpired that this was also a consequence of the rains but not for the reason you may think. As well as watering the earth and creating good conditions for alot of plants the rain also washed away the herbicides used by the farmers to protect the monocultures we’re accustomed to seeing in the fields. Which shows how rapidly nature can regain lost territory when the opportunity arises.

Corn bunting – Emberiza calandra

Another of my local fields was planted up with rape this year. I’ve previously disliked rape because it has a completely unnatural colour, and the smell is not too pleasant either. But since I’ve been getting close to it and seeing the variety of birdlife it supports I’m changing my mind. Not least because it plays host to corn bunting which are becoming increasingly uncommon due to loss of habitat. This rape field regularly had linnet, reed bunting and corn bunting feeding on the seedpods which are extremely rich in oil and therefore a good energy source for small songbirds.

Reed bunting male – Emberiza schoeniclus – perched on top of the mature rape plants resplendent with his black head and white collar

Skylark numbers have been dropping across the UK due to modern farming methods but I hope that my local patch is bucking the trend because year on year there always appear to be good numbers of them. The combined song of a multitude of skylarks as they slowly climb and then drop like a stone is one of natures wonders in my opinion, so it’s good to see them in the skies here.

Skylark – Alauda arvensis

Looking through my photographs for this year there has been alot to see but it seems it many species were scarce until July. Maybe that’s because the dreadful weather meant that I wasn’t looking quite so hard, but I think many natural phenomena were late this year due to climatic extremes. But many species eventually appeared so they are still out there. I’m hoping we now have a year of relatively normal weather from here on so the wildlife has a chance to recover.

15 Comments

Posted in Birds, Butterflies, Buxhall Farm Histon, Countryside walks, Insects, Ornithology, Songbirds, UK wildlife, Walks around Cambridge and Histon

Tagged Alauda arvensis, androconica, corn bunting, Dactylis glomerata, Emberiza calandra, Emberiza schoeniclus, Field poppies, Flanders poppy, large skipper, linnet, Nature, Ochlodes faunus, orchard grass, Papaver rhoeas, pheromone, rape, reed bunting, skylark, small skipper, Thymelicus sylvestris, wildlife

Titchwell waders

Posted on September 22, 2012 | 5 comments

RSPB Titchwell consists of fresh and salt water lakes, mudflats, reedbeds and woodland, consequently it’s home to alot of bird species. One of the rreasons I like visiting places like Titchwell is to see waders, especially when there arfe large flocks of them. And on this visit a mixed flock of hundreds of knot (Calidris canutus, Dansk: islandsk ryle) and bar tailed godwit (Limosa lapponica, Dansk: lille kobbersneppe) would rise from a small island in one of the lakes every few minutes and provide a wonderful display of team aerobatics before settling down on the same island.

A flock of knot and bar tailed godwit taking to the air

The knot remained resolutely in situ on the island so I was unable to snap a picture of one close up, but a bar tailed godwit was a little more accommodating:

A handsome bar tailed godwit showing it’s magnificent beak

Both the knot and the godwit are winter and passage visitors to the UK so it was nice to see numbers of them here in June. Both birds breed in the north and head to the southern hemisphere in the winter. Alsakan godwits overwinter in New Zealand, which is an 11,000km which they accomplish in a single hop and it takes them around 7 days! I’m easily impressed by natural phenomena but I think the migration of the Alaskan godwit is a truly awesome achievement.

An agitated redshank repelling intruders

The redshank (Tringa totanus, Dansk: rødben)above was in a highly vocal mood and kept alarm calling and flying down and around from it’s vantage point before returning to call again. I watched it doing this for several minutes and then the source of its ire became apparent:

Chinese water deer (Hydropotes inermis)

This chinese water deer was foraging in the undergrowth and I guess the redshank was stressed because the deer was close to its nest. These deer were introduced to London Zoo in the 19th century and subsequent escapes from Whipsnade Zoo led to the establishment of a population in Bedfordshire, the Fens of Cambridgeshire and into Norfolk. The tusks are clearly visible on this adult and indicate the species is a primitive one, as tusks evolved in deer before antlers. The tusks are used for defence and for fighting during the rut. According to the British Deer Society the UK population of these deer constitute 10% of the world population. So I guess there can’t be that many left in China.

The lovely lapwing

One of my favourite birds, which I used to see huge flocks of when I wasa kid in the 1970’s, is the lapwing (Vanellus vanellus, Dansk: vibe). We aslo used to call it the ‘plover’ or the ‘peewit’ after its distinctive call. They are handsome black and white in the air with broad angled wings, but close up on the ground they have a lovely iridescent green and a long thin crest.

5 Comments

Posted in Birds, Coastal walk, Deer, Mammals, Ornithology, RSPB reserves, Titchwell, UK wildlife, Waders

Geddington swallows

Posted on September 19, 2012 | 23 comments

A couple of months ago I was at my sisters place in Geddington, a small village in the Northamptonshire countryside which is right next door to one of the original release sites for the reintroduction of red kites into the UK. Consequently, one doesn’t have to look too hard to see red kites there, but on this particular trip it was swallows that were the stars of the show.

Geddington is a very old village and the cottages in the middle, one of which is occupied by my sister, are built from Northamptonshire ironstone, which is a gorgeous building material. Not only is her house built with it but so is her very substantial shed. She leaves the door to the shed open all the time because there are bats roosting there, and in the summer swallows use nests built in the eaves there.

A brood of swallows on the verge of fledging

Swallows (Hirundo rustica, Dansk: landsvale) migrate here from South Africa in the Spring and they generally arrive back around the second weekend in May. They return to the same place every year and often refurbish an old nest which can be used year after year, and there are records of the same nest being used for decades.

I usually get an excited phone call from my sister in the middle of May to tell me her swallows have returned. They come back again and again and she comes over all maternal when the first one arrives.

A pair of very recent fledglings which haven’t yet plucked up the courage to venture outside

They have now done all their breeding and feeding up and are congregating on roof tops and power lines and contemplating the enormous feat of flying down through Europe, across the Mediterranean and the Sahara desert before crossing the rest of sub-Saharan Africa to South Africa. Where they will spend the next 6 months before doing the whole thing again in reverse. Awesome!

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Posted in Birds, Migrants, Ornithology, UK wildlife

Tagged birdlife, Geddington, Hirundo rustica, Landsvale, migration, Nature, Northamptonshire, ornithology, swallow

Back yard safari

Posted on September 15, 2012 | 20 comments

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.