Category Archives: Marine mammals

Turn of the century

Posted on April 6, 2012 | 28 comments

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!

28 Comments

Posted in Amphibians, Anisoptera, Anthropology, Arachnids, Birds, Birds of prey, Butterflies, Coastal walk, Countryside walks, Darter dragonflies, Dragonflies, Falcons, Farne Islands, Fowlmere, Garden birds, Great crested newt, Insects, Marine mammals, Migrants, Newts, Northumberland, Ornithology, RSPB reserves, Seabirds, Seahouses, Songbirds, UK wildlife, Waders, Walks around Cambridge and Histon, water birds

Tagged Acheulian hand axe, arachnids, Araneus diadematus, Ardea cinerea, Atlantic grey seal, bird of prey, blackbirds, Bombycilla garrulus, buntings, butterfly, common blue, Common darter, dragon flies, Emberiza citrinella, falco tinnunculus, falcon, Farne Isles, fiskehejre, garden spider, great crested newt, gulspurv, heron, hominid, Homo sapiens, kestrel, Lepidoptera, migrant hawkers, migration, Northumberland, overwinter, palmate newt, Rallus aquaticus, rødben, red-legged partridge, redshank, RSPB Fowlmere, sea mammals, seabirds, Seahouses, silkehale, smooth newt, songbirds, tårnfalk, Tringa totanus, Tubney Fen, Turdus merula, vandrikse, water rail, waxwing, waxwing winter, yellowhammer

The Farne Isles

Posted on September 23, 2011 | Leave a comment

An absolute must for me when I go to the northeast of England is a boat trip to the Farne Islands. The Farnes are a group of small low islands lying a couple of miles off the coast between Bamburgh and Seahouses.

The Farne Islands from the Northumberland coast

The islands were immortalised in 1838 by the heroic actions of Grace Darling, the 23 year old daughter of the Longstone lighthouse keeper. When a shipwreck was spotted during a North Sea storm on Big Harcar, a small rocky island nearby, Grace and her father crewed a 21 foot rowing boat to rescue the stranded passengers from the SS Forfarshire. Grace was 23 at the time of the rescue, which she survived only to be carried off by tuberculosis 3 years later. Which seems downright unfair to me.

The Longstone lighthouse from where the Darlings’ rescue mission was launched

The islands are currently owned by the National Trust and they are famous for enormous numbers of seabirds including guillemots (Uria aalge, Dansk: lomvie), razorbills (Alca torda, Dansk: alk), kittiwakes (Rissa tridactyla, Dansk: ride), puffins (Fratercula arctica, Dansk: lunde), terns, cormorants (Phalacrocorax carbo, Dansk: skarv), shags (Phalacrocorax aristotelis, Dansk: topskarv) and assorted gulls. During the breeding season there are many tens of thousands of numerous species nesting there.

The shags on the Farnes were very relaxed and this one let me approach within 15 feet or so and didn’t seem remotely perturbed. Its yellow mandible and green eye are very distinctive. A few metres along the cliff top were this pair of downy youngsters :

…busy preening out the down and nurturing the nascent flight feathers. It’s remarkable how in such a short space of time nature provides these young fishermen with a full set of plumage capable of withstanding the rigours of these semi-aquatic hunters underwater feeding technique.

There were one or two turnstone patrolling the rocky shorelines of the islands but the vast majority of the seabirds were completely absent. However, one which did make numerous welcome appearances throughout the course of our trip was the gannet (Morus bassanus, Dansk: sule). They are our largest seabird and can be spotted from afar due to the titanium whiteness of their plumage and their black wingtips. They seemed to be simply passing through that day, all heading north, and none of them paused to dive for fish, which was a pity because it’s spectacular to watch. They were predominantly in family groups of 3-6 birds with adults and patchy darker coloured youngsters.

An adult gannet resplendent in its brilliant white plumage and pale yellow head

…and a family group of three being led by a dark coloured juvenile

The other creature for which the Farne Islands is renowned is the seal. Specifically the Atlantic grey seal. All the islands I saw had large groups of them consisting of territory conscious bulls and numerous smaller females and calves. The bulls were highly vocal, rearing up into threatening postures to intimidate any others that unwisely ventured too close. No more physical aggression was required but from the face of the male below they are quite capable of a proper fight resulting in scar tissue. Although I imagine that is most likely to happen during the more serious business of a competition for the attentions of the ladies.

A big bull Atlantic grey seal basking in calm waters
The seal on the right is a female minding her calf on the left
And another female launching herself into the sea from the rocks
Several members of a bigger group basking in the sunshine

The rocks and the water was full of seals, most were simply basking in the sunshine, the females were minding the youngsters and the males were being generally grumpy. They would hang in the water peering at our boat and some of them were asleep in that position, standing on their tails with their heads poking out of the water. The waters looked crystal clear and it gave me a hankering to explore the islands in kayak and do some snorkelling. But that will have to wait until the next trip.

Hook nosed sea pig

Posted on February 22, 2011 | 1 comment

Radio silence has been a tad prolonged this time, so apologies for that. I wasn’t able to get out and about last weekend so I’ve delved into the archive to write about the grey seal. The Latin name for this one of our native seal species – the other being the common seal (Phoca vitulaina) – is Halichoerus grypa – or ‘hook nosed sea pig. Which is a wonderfully descriptive piece of taxonomic nomenclature! It is the only seal to be classified in the Halichoerus genus.

Grey seal relaxing in the Menai Strait between
Anglesey and North Wales

The grey seal is almost twice the size of the common seal and is immediately distinguishable by the long ‘hooked nose’ compared to the stubby rounded snout of the common seal. Males are around 2.1m in length and females 1.8m, weighing approximately 230kg and 150kg respectively, the female is therefore much smaller than the male.

Distribution of the grey seal is across the northern Atlantic Ocean with breeding colonies in northern Europe and North America. They are fish eaters feeding predominantly on cod and sand eels but are opportunists and will take a range of fish caught at depths down to 70m including molluscs and crustaceans and they fast during the breeding season.

Grey seal watching me watching it off the Farne Islands, Northumberland

Around two thirds of their time is spent at sea, but they will haul themselves onto rocks, usually on uninhabited islands but also on some isolated mainland sites between tides and also come ashore to breed. This occurs at various times around the UK and while the females are nursing pups the males will also come ashore to mate. At this time the males may get into territorial battles with other males resulting in scarring to their necks. The pups which are white, suckle milk that is 60% fat for approximately 3 weeks during which time they will gain 2kg per day that is mostly sequestered as a subcutaneous layer of blubber providing essential insulation when the young go to sea.

Grey seals were the first mammals to be protected by legislation – the Grey Seal Protection Act of 1914 – and since 1960 the UK population has increased to 120,000 individuals, around half the world population. They are affected by ‘seal plague’ – phocine distemper virus – although of individuals known to have succumbed to the disease only 10% were grey seals.

These delightful animals can be seen all around the UK coastline from the south west, Wales, Scotland and the east coast of England and due to the increase in numbers they have attracted the inevitable hatred of fishermen who claim that they are responsible for declining fish stocks, and they have also been implicated in damaging the nets of offshore fish farms and passing on parasites. The link with parasites is a complex one and further studies are required to establish the link between seals and transmission of parasites, or not.