Tag Archives: brimstone

Fenland safari

Wicken Fen is the largest remaining area of true fen in England and has survived because it has been conserved by encasing it in what is effectively a gigantic plastic bag. The earth on the Fen is waterlogged and if the bag weren’t there the water would simply drain away leaving very rich agricultural soils but none of the wildlife associated with fenland habitats. Another result of the water retention is that the Fen is 6-8 feet above the surrounding farmland and the earth literally shakes if you jump hard on the ground as it’s like a saturated sponge.

Because of the water the predominant habitats are reedbeds and waterways which is reflected in the wildlife. The Fen is so rich in wildlife that a hike around there is like a mini safari! I was there on a hot and sunny Sunday morning in June and wildlife of all sorts abounded. In particular the insects were very busy. This dragonfly had recently emerged from the larval stage as an adult and was sitting in the grass drying out before taking to the air.


Black tailed skimmer youngster preparing for it’s first flights

The young skimmer was on the edge of a path which ran alongside one of the lodes (man made water courses) and on the water opposite the skimmer were lily pads and sitting on one of them was a damselfly, warming itself up in the morning sunshine.


Red eyed damselfly (Erythromma najas) in beautiful repose on a lily pad, surrounded by reflections of the clouds

And of course, that time of year is the season for lurv for many creatures, including this pair of variable damseflies (Coenagrion pulchellum) which are in the process of mating. The male is the blue one and he is clasping the female by gripping the back of her head – the pronotum – whilst she has pressed her genitalia against his abdomen to receive the sperm.

As well the inscect diversity the unique habitat of the Fen is home to lots of beautiful plants and flowers, including this common spotted orchid. This orchid is indeed common and can be found in fens, marshes and other wetlands all over England, but is rare in Scotland. Common, or not, I think all orchids are spectacular flowers and it was really good to see them in such numbers on the Fen.

Common spotted orchid – Dactylorhiza fuchsi

Whilst I was busying myself trying to get photogrpahs of the dragons and orchids a kestrel (Falco tinnunculus, Dansk: tårnfalk) was busy overhead. But even better than that a hobby (Falco subbuteo, Dansk: lærkefalk) was on the hunt for dragonflies and small birds.

The hobby is a small falcon which can be seen in these parts in the summer and hunts low over farmland and reedbeds at phenomenal speed. It’s one of very few predators that can hunt swallows and swifts in flight. This one was doing exactly that and in the distance, a few hundred metres away were at least another two. So I guess it was a family and the chicks had recently fledged and the adults were showing them the ropes. So I whiled away a good half an hour watching their breathtaking aerobatic exploits!


Brimstone butterfly sipping nectar from a thistle flower

I did volutary work at Wicken for 3 years or so back around the turn of the Millenium. It was incredibly rewarding and a good opportunity for a lab-based sedentary person such as myself to get outside and do some donkey work under the sky. One of the projects I worked on back then was scrub clearance to create an area suitable for butterflies to breed. I went and had a look at it on this walk for the first time since I helped to create it and it was very different. The scrub we cleared had been replaced by less scrubby, more proper woodland, trees, and there was small open glades with grasses and wild flowers. Whilst I was in there I flushed a leveret, which is about the closest I’ve ever been to a wild hare, it had been sitting tight but made a run for it when I got just a tad too close – about 5m!

So I didn’t manage a picture of the hare but I did manage a shot of the brimstone butterfly above (Gonepteryx rhamni), which I thought was absolutely lovely, sitting on the purple flower and framed by the two grass stems. It was terribly obliging and let me move all round it to get the best angle for a portrait. So this is about the best shot and one I’m very pleased with. I hope you like it too!

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Springtime song

The weather this  Saturday was glorious – no wind, blue sky and warm sunshine. Perfect for a stroll around the countryside. So I set off around 8am and apart from the warmth, the first thing I noticed was the air laden with the  fragrances of spring blossom.

In the last week the spring weather has caused trees and flowers including the willow to blossom…


Pussy willow – the furry catkin of the willow tree against a gorgeous blue sky, and a lone honeybee

Butterflies are waking up after hibernation. A red admiral (Vanessa atalanta) flew through my garden last week and a friend told me he saw a brimstone in his garden and another wended its way gently past a window at work today.

Red admiral on a bindweed flower
Red admiral feeding on a convulvulus flower

Red admiral are resident and can be seen all year round when weather permits. Brimstone (Gonepteryx rhamni) are also resident and hibernate over the winter but they are now out and about aroused by the warm weather. Bumble bees have also become more abundant in the last few weeks and I now see them on most days.

The birds are all singing and a walk through parks and fields is accompanied by the song of greenfinch, blue tit, great tit, dunnock and robin, most noticeably. And on my hike across the fields abundant yellowhammer, reed bunting and corn bunting, three Emberiza species, were all in full voice:


E.citrinella – one of many yellowhammer, this one is a male, patrolling the hedgerows

E.schoeniclus – reed bunting male

E.calandra – corn bunting making its very distinctive call

Yellowhammer, reed bunting and corn bunting perch in hedgerows and  make feeding forays to the ground in the neighbouring fields where they feast on seeds and during the breeding season and  summer will eat invertebrates. I pass one location where there has been a mixed group of 20-30 reed bunting and yellowhammer present regularly over the last month. Corn bunting have made a recent comeback to the fields around Histon, they disappear at harvest time, middle to end of August, and reappear in the Spring when they can be seen perched on top of brambles, bushes and short trees making their very characteristic song.

Skylark were also singing constantly. Farmland species such as these have seen their habitat severely depleted in recent times, consequently their numbers are reduced as a result.

A red fox and a small group of fallow deer put in appearances, the fox was heading a cross the fields to Landbeach heading away from a place I photographed cubs last year, so I hope they are breeding here again this year. The deer look like a group I photographed in the same location a couple of months ago and posted about thinking they were sika deer. They can be very similar so I’m not sure what species these are, if anyone recognises them please post a comment to let me know.


Fallow deer – Dama dama – the leader on the right is sporting native antlers

A pair of crows chased off a buzzard which thermalled over the fields before disappearing into the haze towards Waterbeach and a flock of several hundred black headed gulls squawked noisily over the fields. I observed them for several minutes with binoculars and I think they were all black heads, but there could have been a few individuals of other species mixed in. A sparrowhawk flew at very high speed from the Linnet Hedge across South Bean Field before rising up and passing through a gap in the treeline, causing mayhem with the birdlife in the gardens beyond and a female kestrel was looking for rodents in the South Fallow Field. It was the first time I’d seen birds of prey here for several months so it was great to see three species on one walk.