Great Northern Diver

When an unusual bird turns up in Bristol, it may have overshot its destination, or been blown over by strong winds. Sometimes, the bird is simply ill, or unable to find suitable food, especially if it turns up in the muddy Severn Estuary!

Recently, a very tame Great Northern Diver was found feeding close to people on a marine lake at Weston Super Mare - aside from providing some amazing opportunities for photos, the bird was also seen feeding on crabs. 

Sadly, after a week or so of being here, it was found dead today by ecologist Phil Quinn - I happened to bump into him outside the Bristol City Museum as I was on my way back to my office. He had the diver with him, and was about to take it into the museum. 

Removing the bird from a black, plastic bag on the path outside Browns restaurant (as you do!), I marvelled at this large, duck-sized bird which had flown down from Iceland or Canada. It was clearly a juvenile, with immaculate plumage, and silvery, shimmery edges to its back, and shoulder feathers. As with all divers, the legs were flattened; ideal for moving through the water with the least resistance. As we looked closer at its huge, thick bill, we noticed the nostril was divided in to two parts, perhaps an adaptation to help with diving. 

While it is sad the bird died, at least it can now contribute further to science - over time it will be mounted and used as part of the local, museum collection at Bristol Museum & Art Gallery.

For photos of the bird alive, see the avonbirding blog. 

A thrilling wildlife moment - redstart

I had one of those truly thrilling wildlife moments yesterday - it's very personal and relates to redstarts, a relative of the robin which have just arrived in the UK from West Africa. They are stunning birds and at Portbury Wharf Nature Reserve I had the chance to hold and ring a beautiful male. Some people may opt for a bird of prey or a colourful parrot as their ultimate bird to see up close, but for me, seeing this beauty in the hand was just so exciting!

After missing out on a deluge of migrants dropping in to the reserve on Saturday morning I was determined to be at the ringing site on Sunday morning after leading a dawn chorus cycle ride in Bristol's Avon Gorge. There were less migrants around but from our ringing site we were watching a female and the odd male redstart fly-catching in the nearby scrub. 


Towards the end of the ringing session, around lunchtime, I went to check some nets for the last time and suddenly spotted a male redstart on the grass. It flew away from me and flew straight into the pocket of one of our mist nets! Eureka! I ran over to the net, safely removed the bird and brought it back for ringing. 


And here it is!

I've been wanting to see one up close for years - I used to spot redstarts at Thursley Common in Surrey when I was a teenager and have since seen them in the Forest of Dean and different parts of Wales. 
However, their black mask, white forehead and rusty-red tail have fascinated me - a truly flashy bird. 

What's even more remarkable is that these birds have been wintering in the scrubby woodland in parts of West Africa - countries such as Guinea, Ghana and Ivory Coast. In recent weeks they have been flying across Africa, into Spain, France and in recent days have arrived en masse in the UK. And they've been everywhere, heading to mature oak woodlands, heathland and pasture, particularly in the west of Britain. 


Let's hope he makes it to his woodland territory and gets spotted by another ringer or birder!

Young Peregrine travels from Avon Gorge to the West Midlands

I've been colour-ringing peregrine chicks since 2007 with the help of fellow BTO ringer Ade George, and volunteer climbers from the British Mountaineering Council. In each year I have been building up the number of nest sites we visit to maximise how many chicks we ring. With bird ringing (or banding) it is a numbers game - the more birds you ring, the more likely someone will spot one of 'your' birds and report it. With colour-ringed birds this likelihood increases hugely - while only perhaps 2% of birds with just metal ID rings may be resighted, up to 98% of birds colour-ringed may be recovered.

BX - one of five chicks ringed in the Avon Gorge in 2010. Photo by Ed Drewitt.

With my peregrine work the results can be a little delayed. In the first first few years a peregrine's life is very nomadic as it travels around getting to know the region and no doubt look for a mate. So it's not until a peregrine begins to settle at a nest site at two or three years old that it may be seen and identified by birders.


Of my peregrines that have been re-sighted so far, most have been quite close to Bath and Bristol, near where we ringed them. For example, one was seen with a female partner 15km south of Bristol from where it was ringed two years later; another is now the breeding male at a nest in Bath where it hatched; and a third individual was re-seen later in the autumn at the site where it was ringed and had fledged earlier that year.


Our furthest travelled bird however goes to the following individual. One of the young peregrines we ringed in the Avon Gorge in 2010 was also filmed for the BBC's Springwatch.
He was given a blue colour-ring with black letters, BT (his sibling BX is in the photo above)


He was spotted and photographed by Michael Colquhoun in the Malvern Hills, Worcestershire back in April 2011. This was exciting news and it was great to know one of the chicks had ventured so far. 

BT in April, 2011 - now is partial adult plumage in the Malvern Hills. Photo by Michael Colquhoun

BT's colour ring clearly visible. Photo by Michael Colquhoun.

However, I then had sad news in October 2011 that a peregrine with one of my colour-rings had been found dead by a dog walker not far from KIdderminster in the West Midlands. After exchanging e-mails with local birder Jason Kernohan who met the dog walker and recovered the dead bird, I discovered it was the same colour-ringed individual, BT. 


He had been dead for four days before being found (as indicated by the development of moaggots). He was taken to a vet by the police for an x-ray to confirm he hadn't been shot. He had been found below power lines and seems likely he had died from some interaction with these. 

BT's colour ring. Photo by Jason Kernohan

BT's metal BTO ring. Photo by Jason Kernohan.

Despite this young bird's death I'm pleased we know his final outcome and where he travelled. It helps build up a bigger picture of what peregrines do when they fledge. It's interesting that we've not heard from the other four chicks that were in that same family. Yet we have heard from this individual twice! Hopefully as the other four (assuming they are all alive) begin breeding they will be spotted and identified by myself or someone else watching them.

A murmuration of Starlings close to home

Here's the sounds of thousands of starlings at roost!

http://soundcloud.com/eddrewitt/the-sounds-of-thousands-of

And here's my own running commentary of the same experience close to my home:

http://soundcloud.com/eddrewitt/me-reporting-on-more-starling

There's been a lot of publicity recently on the incredible starling experiences across the UK where millions of these gregarious birds form swirling shapes movements, moving through the sky as a single entity like a squidgy, amoeba changing form and size every second! It leaves those watching it for real or viewers online or watching tv with mouths wide-open, in awe at the sheer complexity, beauty and form. 

Here in Bristol, one of the most well known starling experiences is about an hour away down on the Somerset Levels. Millions on starlings roost in the reedbeds, feeding by day on the farmland across Somerset. Even more mind-boggling is that huge numbers of these birds originate from Russia and eastern Europe which is currently very much colder and frozen compared to the west of England (where it's just wet and mild!).

In the past few weeks thousands of starlings have been performing this incredible display close the second Severn Crossing on the Severn Estuary near Bristol. It's only ten minutes drive from my home and an awesome opportunity to watch such a spectacle so close by. They were swirling round above my head and so close I could even smell their compost-like scent! And once the mass drop down in the bushes, they break their silence and burst out into a cacophony of squeals, whistles and gurgles as they squabble over their roosting space!at

I captured (above) this murmuration of starlings on the Somerset Levels in February 2010.

Colour-ringingd Robins - alas, halted by the British weather again!

The British weather - a phenomenon we always seem to be talking about and something where there is genuinely (arguably!) always something to be chatting about! And this morning is of no exception. Helping a Masters student at the University of Bristol with a project on robins we were all set for catching and ringing a few more this morning - but then at 4.30 this morning the rain was beating against my bedroom window and the wind speed had turned from calm (and clear starry skies) to gale force! Time to cancel and re-arrange - again!

The project itself involves carefully catching the robins in  a mist net, putting special colour rings that denote each individual on their legs plus a metal ring issued by the British Trust for Ornithology. Our red-breasted friends are then measured, aged and weighed before being released.

Dan, whose Masters project this is, is looking at the alarm calls of the robins and how the individuals
interact with each other - hopefully over the next few weeks before Christmas we'll be able to ring a few more to help Dan know who is who.

Below is a photo of one of the colour-ringed robins - I'm especially interested to see whether any of the robins disappear (perhaps as migrants) and who stays around or the spring to breed.

seabirds galore at Severn Beach

Last night was a most astonishing and special experience at Severn Beach, on the Severn Estuary. With
persistent north-easterlies, a rising tide and sunshine in the evening it was perfect conditions for seabird watching.

Flocks of dunlin and ringed plovers busily fed, scattered along the tide line before the water covered any available food. The ringed plovers rested further up the foreshore on the shingle.

Meanwhile, a flock of  over one hundred bar-tailed godwits moved around the coastline, often appearing just in front of me, hanging in the wind with bowed wings. When they landed, the brick-red adults stood out from those still in their grey-brown winter plumage. I never seen this many here before1

Suddenly above the sea, a large swirling flock of a few hundred terns, moved across the sky before drifting further west after they reached the M4 Severn Bridge. A little later, an even larger flock of over five hundred birds stretched low across the water. As they edged closer they gained height, their elongated bodies and angled wings keeping them together as the wind blew them back. Many funnelled down to rest briefly with the roosting bar-tailed godwits before rising again to join the main flock. At the front of the flock a black tern stood out with it's dark, black belly. The flock flew right across the sky hanging on the edge of the estuary over the beach - at one point hundreds hung in the air above me, calling away. Wow! Just amazing!
They moved towards the bridge before drifting west, getting higher and high as they went. They didn't seem to be getting very far!

Meanwhile, hundreds more bar-tailed godwits had appeared - the roosting flock had also been disturbed by dog walkers. A large flock of a few hundred flew overhead and moved in land, calling. Another flock came close overhead - wow! They rested near the dunlin and ringed plovers giving incredible views.

Whimbrels 'bubbled' overhead, again giving wonderful views in the evening sunshine. A grey plover flew singly over the water. Meanwhile, far across the estuary the odd darker gull gliding up and down, using the waves for lift may well have been an Arctic skua or two.

It's incredible to think that just three or four days previous the bar-tailed godwits would have been on the coast of the Gambia or Senegal. They fly almost direct back to their breeding grounds - indeed, the birds I saw weren't stopping for long. I wonder what journey the terns have made? - most were probably Arctic terns having followed the African coast up past Portugal, France and then over the Channel.

What will this evening will have in store?!

First reed bunting I've ringed to be spotted elsewhere!

Yay! Information on the first control of a bird I ringed which has then been found somewhere else has just come in!

A reed bunting I ringed on 17th October 2009 turned up at Corsham Lake in Wiltshire, 

37 km away on the 19th November 2010, 398 days later!! Here's a photo of possibly the same bird (I ringed half a dozen reed buntings that day - passing through on migration). 

One was also a control (ie already ringed) from further up the road in the Gordano Valley. Not bad for one morning's ringing of 15 various birds in total!!