Tag Archives: Fenland

Wonderful Wildlife of Wicken Fen

Around 10 years ago I used to do voluntary work at Wicken Fen which lies in the flat emptiness between Cambridge and Ely. Wicken Fen is one of the last and the largest piece of remaining fenland in East Anglia and is home to a plethora of wildlife. It’s owned and managed by the National Trust in such a way that diverse habitats favouring different species are established and maintained. When I worked there we were engaged in various activities such as repairing boardwalks, fences and hides, scrub clearance, which was a good activity for freezing winter days because it involved a huge fire to burn the felled scrub, but my favourite job was building raised ponds with wheelchair access so disabled children could safely do some pond dipping. Which is an activity that everyone should be able to do, child or not. All you need is a net, a jar, a magnifying glass and a pond and a sunny day is turned into a fantastic voyage of biological discovery.

My re-exploration last weekend started from Upware at the back end of the Fen where we parked and joined Wicken Lode. We had counted over 30 species of birds within the first half hour of our walk. If it had been solely down to my good self the number would have been rather less because my skills when it comes to recognising birdsong are a tad limited. Fortunately I was with my friend, David, who’s aural acuity is considerably better honed than mine, and I’m highly envious of his ability to detect the song of distant bird species and identify them. One of the first birds to greet us in the car park was this mistle thrush perched on top of a telegraph pole:

Mistle thrush – Turdus viscivorus (Dansk: misteldrossel)

… and a great spotted woodpecker, also finding a handy perch at the top of a telegraph pole:


Great spotted woodpecker – Dendrocops major (Dansk: Stor flagspætte)

Great spotted woodpeckers make a characteristic drumming sound by doing what their name suggests and it is the frequency of the drumming, of around 40 beats per second, which generates the resonant sound. Anatomical examination of their skulls has revealed the presence of built in shock absorbers which prevent them damaging their brains when they drum. They feed on tree seeds such as acorns and insects which they dig out from under the bark of trees and they can also take birds eggs and chicks which they have been known to steal from birdboxes by drilling holes through the walls and plucking them out.

We eventually managed to tear ourselves away from Upware and head out along Wicken Lode on to the Fen where a Cetti’s warbler (Cettia cetti, Dansk: cettisanger) gave away his location by singing in a way that only Cetti’s can. It’s an amazing sound and I can highly recommend having a listen here. These recordings don’t quite do it justice, but you get a feel for it. Also on the Lode were a family of three mute swans; male, female and one cygnet. Mute swans are always photogenic but I felt particularly blessed when the male spread hs wings and shook himself down:


Mute swans (Cygnus olor,  Dansk: knopsvane)

We turned off the Lode and headed along Harrisons Drove where we came across a field of very impressive bovines. In  order to manage the fen (and at the same time draw in more visitors, no doubt) cattle and horses are used to trim the vegetation back naturally. I’d never seen the cattle before and they are magnificent animals – looking more like a cross between a highlander and a bison than traditional farm cattle:


They must be hardy beasts indeed to survive on the meagre nourishment offered by the fen

Also along the drove I spotted a hen harrier (Circus cyaneus, Dansk: Blå kærhøg) quartering the field, either a female or a juvenile, identifiable by the pale band around the rump just infront of the tail feathers. In my opinion, spotting a harrier, even a fleeting glimpse, justifies an expedition into the fens early on a freezing morning. Alas it was too far away to photograph, but when after another couple of hundred metres we entered a hide overlooking a lake, there were plenty of subjects for photography…

This lake was home to hundreds of ducks – we estimated around 800 from 5 species that we could see… as well as coot and mute swan. Watched over by the longhorns.

I don’t think this lake is there in the summer because looking at the area on Google Maps there is no water, and David pointed out that their were no diving ducks such as pochard (Aythya ferina, Dansk: taffeland – which tranlates as ‘table duck’ which shows what the Danes think of them!) tufted duck (Aythya fuligula, Dansk: troldand) or goldeneye (Bucephala clangula, Dansk: hvinand), suggesting the water was too shallow. But there were large numbers of shallow feeders such as gadwall (Anas strepera, Dansk: knarand), shoveller (Anas clypeata, Dansk: skeand), pintail (Anas acuta, Dansk: spidsand), mallard (Anas platyrhynchos, Dansk: gråand) and wigeon (Anas penelope, Dansk: pibeand). We had seen three flocks of wigeon (and heard them too, they make a great sound) fly over and land on the water just before we got to the hide.  Some of them were on the lake above and lots more were on an adjacent one:


Wigeon. Lots of them! I counted around 60 in this group.

And in between the two lakes were numerous reed bunting (Emberiza schoeniclus, Dansk: rørspurv) flitting between the hedgerow and the path and pausing to pluck seeds from the seedheads of the reeds, hence their name…

Male reed bunting – one of my better reed bunting shots

And the female:
We saw 44 species of birds that we could identify on our way around Upware and the Fen. And as well as all the birds Wicken is home to a phenomenal diversity of insects, large mammals including roe deer and otter, small mammals including shrews, voles, mice and the predators that hunt them, and reptiles including lizards which can be seen basking in the sun on the boardwalks and fenceposts early on summer mornings. Now I’ve been back and rediscovered the Fen I’ll make sure I get back later in the year and post about the changing wildlife in what is a unique collection of ecosystems.

Advertisements

North Histon field walk

Most of my meanderings are across fields adjoining Histon on the northen edge of Cambridge, UK. Farmland here stretches almost unbroken, with the exception of the Cottenham to Landbeach road, and a few minor lanes, for 6-7 miles to the Wilburton to Streatham Road and is interspersed with scrub and plenty of mature trees offering shelter and food for the local wildlife. I’ve been keeping a wildlife diary since the middle of 2009. The 2010 edition is here and I’ve drawn a map of the Histon north fields area which is a little bit ‘Lord of the Rings’ style but it shows where all the locations mentioned in the diary are in relation to each other. Of course, all the location names are figments of my imagination from two years ago, so none of them would be found on an official map!

The photographs below will hopefully help you visualise the places and habitats I’m describing.  I have lots of pictures of the landscape features taken at various times of year, but all the pictures below were taken late in the afternoon, 3-4.30pm, last Sunday  (7th November, 2010) and I’m using these because the sun was low in the southwestern sky making the colours wonderfully vivid. There are no animals or birds in these shots, unless you’ve zoomed in and have spotted some that I haven’t. So if you wanted to see animals I apologise, and if you find any please let me know! The pictures start and finish with my favourite poplar tree and get progressively darker, and the light more blue, as the sun dipped below the western horizon:

Linnet Hedge heading towards the Poplar with South Bean Field on the left

Entering the fields from the B1049 I walk along the Linnet Hedge where in the summer numerous linnet appear most days perching on the power lines and feeding in the fields immediately adjacent to it. Not just linnet though, there are dunnock, house sparrow, blue tit, great tit, chaffinch, greenfinch, goldfinch, blackbird, wren, whitethroat, yellowhammer, blackcap and kestrel regularly sighted in or around it.

Heading east-south-east towards the Poplar Tree I turn left and head towards the sycamore tree at Hedge End along West Ditch  to the Merlin Hedge.


Poplar Hedge on the left leading to the small sycamore at Hedge End where it becomes the West Ditch, Middle and North Bean Fields on the right, Merlin Hedge at the end of the track. Lone dog walker in the distance.

West Ditch is a great place to see all kinds of wildlife. Apart from being full of many wild flowers from Spring through to Winter, it is full of birds too, such as wren, linnet, goldfinch, reed bunting and corn bunting.  One evening this summer at the far end of the West Ditch I was distracted by the buzzing of an insect which turned out to be a privet hawk moth. Alas, it was too dark for a photo, but they are black and pink and up to 12cm wingspan, so an impressive sight. Common darter dragonflies also patrol up and down here.


Ditch running northwest to southeast between the sycamore tree at Hedge End and the farm

The Merlin Hedge is so called because not long after I started walking there I was half way along it when a merlin approached at quite incredible speed flying 2m off the ground and as it crossed the hedge, 10m in front of where I stood, it dived to catch a swallow which proved too elusive so it veered back on course and went on its way. All that lasted just 15-20 seconds or so but it was immensely exciting to watch.


Merlin Hedge running southeast towards the Bonfire and a machine store

At the end of the  Merlin Hedge I usually double back round the wooden post down the other side of the West Ditch towards the sycamore tree, turning right down the southern edge of the Beet Field:


Southern edge of Beet Field looking west to the back of the gardens of the B1049

At the end of this track a left turn takes me along the back of the gardens, allotments and horse paddocks to the South Fallow Field at the far end of which  I cross the B1049 and head for home. But I can’t finish without including this picture of the Poplar Tree across the PX Field:


Poplar tree in the late afternoon sun. I love the colours in the sky!