9 Nov 2024

18 Oct 24 - A Winspit Green Shieldbug

I don't go out looking for Shieldbugs. But I will always stop and look at them, as well as, photograph them, if I bump into one. So, I was pleased to get this photo of Green Shieldbug as I was returning from a quiet walk down Winspit.
Green Shieldbug
The extent of the green on this Shieldbug doesn't leave too many other species to consider. The other potential species to eliminate are:
  • Southern Green Shieldbug is just starting to establish itself in the UK. It is an all green Shieldbug without the fine black spotting
  • In early Spring, Gorse Shieldbugs are a yellow-green with a bright yellow edge all around them and they have a bluish edge to the corium. Later in the year, they develop purplish-red bands on the pronotum and corium.

6 Nov 2024

26 Oct 24 - The Gillingham Shrike

On the morning of 19 Oct, there was an RBA message about an Isabelline Shrike at Gillingham. I passed the news onto a few locals who I knew would be interested, whilst deciding to wait for other Birders to head off & check it out. After all, Gillingham is well over an hour away & there was plenty of time to get there that afternoon. In addition to the distance, I had a few thoughts that meant I wasn't going to be heading there immediately. Firstly, it was an odd location, was the initial identification as an Isabelline Shrike correct and was it pinned down and showing well. A couple of hours later, my local Purbeck Birding mate, James Leaver, put the first photo of it on twitter. Well it was clearly showing well & it was an Isabelline Shrike type.

The problem now came down to taxonomy. A few decades ago, there was a single species Red-backed Shrike, which ranged from Western Europe across to the Tibetan Plateau. By the late 70s, the Eastern subspecies were split off as Isabelline Shrike, which was sometimes also called Red-tailed Shrike. This left Red-backed Shrike as a Western Palearctic species which continued into the Western edge of the USSR. About ten to fifteen years ago, Isabelline Shrike was split again into Turkestan Shrike & Daurian Shrike: with Daurian Shrike containing the most Easterly of the Isabelline Shrike subspecies. To add to the confusion, Isabelline Shrike remains as a occasionally used pseudonym for Daurian Shrike and I've seen Turkestan Shrike still being called Red-tailed Shrike. This is particularly daft, given these are names that have been used for the Turkestan Shrike & Daurian Shrike complex before the split & are still being used after the split for individual species. Therefore, calling the Shrike an Isabelline Shrike doesn't indicate whether people are referring to it as a Daurian Shrike or that it not been identified down to a species. After a quick look at a few books, my initial reaction was that it looked like it was probably a Daurian Shrike. I also was pleased to see a few other good Birders calling it as a Daurian Shrike, including Marcus Lawson, Julian Thomas & Martin Cade. I've not seen a Dorset Turkestan Shrike, but I did see the Portland Bill Daurian Shrike in late Oct 12. I decided not race off to Gillingham that afternoon.

One week on and the Gillingham Shrike was still there and had been showing well during the week. I had been out a lot in the Isle of Purbeck in that week, with little reward. Finally, there was a still, sunny day and I spent the morning at St Aldhelms. After some lunch, I decided to head off to Gillingham for the late afternoon. I arrived around 16:00 and ten minutes later, I joined a handful of people standing back & watching a large area of Brambles in the corner of the field. Earlier in the afternoon, it had been closer to this group, but had moved into the corner with some people following it. The Shrike wasn't on view. Perhaps not surprising as there were two toggers standing right next to the Brambles, with one who couldn't stay still and was patrolling in and out of the area on small paths. Another clueless togger with no understanding of fieldcraft & doing what I call Aidan-ing i.e. chasing Shrikes around, as soon as, they pop up in a desperate attempt to get even more close photos. Local Birders will understand the reference.
The right hand togger did some excellent Aidan-ing: When the Shrike popped up, he was quick to move towards it, causing it to move further back or disappear. In between appearances, he was moving around the Brambles trying to get closer to it
The Shrike was keeping low and well back in the Brambles. After about a half hour of waiting, another photographer arrived and pointed out there was a path down the side of a Maize field, which we could use to get closer to the Shrike. A few of the waiting group & I followed him. This led us to a different side of the Brambles where we stayed still & waited. Fortunately, the Aidan-ing togger wasn't patrolling on this side of the Brambles. Within a few minutes, the Shrike popped up and sat on view. We stayed still and it performed nicely for over five minutes on one perch.
Probable Daurian Shrike: Showing the limited mask behind the eye, the indistinct supercilium and the lack of rufous in the nape
Probable Daurian Shrike
Probable Daurian Shrike: Is there too much rufous in the rump for a Daurian Shrike?
About five minutes later, it popped up again for a second extended performance: but it was now in the shade. When it popped up a third time it wasn't as close.
Probable Daurian Shrike
Probable Daurian Shrike
I decided that time was getting on & I would try to get back to Purbeck to look for a Short-eared Owl, that had been seen the previous evening for my Isle of Purbeck Year List. In the end, I had left it too late and it was dark before I was close to the Purbeck border: c'est la vie. I had seen the Shrike well in excellent light and as it turns out, on its last afternoon. It disappeared on that evening's clear skies. The question now is which species it is?
Probable Daurian Shrike
The identification of first winter individuals isn't easy. The new ID Handbook of European Birds is perhaps the most up to date guide that I've got. Reading it, I can see features suggesting both species. The mask being restricted to behind the eye and the not particularly distinct supercilium, suggests a Daurian Shrike. Both the mask and the supercilium should be clearer on Turkestan Shrikes. The pale brownish grey of the upperparts again fits better for a Daurian Shrike, with Turkestan Shrikes described as having a rather dark cold brown-grey upperparts, compared to pale brown-grey on Daurian Shrike. The Britain's Birds photo field guide states the nape and rump on Daurian Shrike is the same colour of the back, whereas, it refers to the nape and rump as rufous on Turkestan Shrike. While the nape looks OK for Daurian Shrike, is the rump too rufous? On balance, I favour it being a Daurian Shrike: assuming the field guides are to be believed. It will be interesting to hear what BBRC think.

Apparently, a DNA sample was collected and it will be interesting to see what that comes back as. Just before I posted this Blog Post, I saw a tweet from Martin Collinson that said " Gillingham 'Izzy' Shrikes, Oct 2024: genetically in a clade containing both Daurian and Turkestan (and Red-backed) Shrikes so we can't ID". So, DNA won't help on this occasion.

4 Nov 2024

23 Oct 24 - An Eighteen Year Female Or An Old Lady?

Whilst checking the Spoonbill flock on the DWT Brownsea lagoon for colour rings, I saw an old friend was back in Poole Harbour again: Spoonbill AE. She has been returning for many winters now. The full history of who has reported to the Dutch Spoonbill ringing scheme is a who's who of Poole Harbour Birders. One week later & I managed to get some photos of her.
Some of the Spoonbill flock
Spoonbill: AE trying to look good for the camera
Spoonbill: AE
The ring details of AE are:
  • Left leg - Pink on Blue AE & a metal ring
  • Right leg - Black on White AE (which now appears to be a yellowish colour presumably down to the age of the ring).
I haven't added in the full history of AE's movements, but here is a summary of her UK movements. Spoonbill AE was ringed as a chick at Schiermonnikoog, Oosterkwelder in Holland on 19 Jul 06. She spent her first winter three hundred miles away around the Somme in France, before returning to Holland. Subsequent winters she was seen at:
  • 2007-08: Poole Harbour, Dorset (Kevin Lane)
  • 2008-09: Devon and then on the River Tamar in Cornwall in February 2009
  • 2009-10: Yealm estuary, Devon, then back on the River Tamar in January 2010
  • 2010-11: France in September/October, Dorset a week later (Pete Moore) & River Lynher, Cornwall in December 2010, then back to Devon & Poole Harbour (Bob Mould) in January
  • 2011-12: Poole Harbour, Dorset (Pete Moore)
  • 2012-13: Poole Harbour, Dorset (Steve Smith, Pete Moore & Shaun Robson)
  • 2013-14: No sightings
  • 2014-15: Poole Harbour, Dorset (Chris Thain, Steve Smith & Shaun Robson)
  • 2015-16: Poole Harbour, Dorset (Chris Thain & Ian Ballam)
  • 2016-17: Poole Harbour, Dorset(Ian Ballam, Shaun Robson & Nick Hopper)
  • 2017-18: Poole Harbour, Dorset (Nick Hopper)
  • 2018-19: Poole Harbour, Dorset (Shaun Robson)
  • 2019-20: France in October, then Poole Harbour, Dorset (Terence Thirlaway)
  • 2020-21: France in October, then Poole Harbour, Dorset (Shaun Robson)
  • 2021-22: Poole Harbour, Dorset (Shaun Robson & Mark Wright) & Needs Ore, Hampshire
  • 2022-23: Poole Harbour, Dorset from 12 Oct 22 (Steve Smith & Ian Ballam)
  • 2023-24: Poole Harbour, Dorset from 25 Oct 23 (Steve Smith, Shaun Robson & Ian Ballam) & River Lynher, Cornwall on 16 Jan 24
  • 2024-25: Poole Harbour, Dorset from 16 Oct 24 (Steve Smith).
Having passed her eighteenth birthday, she is getting on a bit now. A quick search online suggested a good lifespan might be fifteen to twenty years, with the oldest known Spoonbill in the wild reaching thirty years. So with luck, we could see AE returning to Poole harbour for the next few years.

2 Nov 2024

16 Oct 24 - Bad Hair Day

Thanks to heavy early morning rain and the threat of more rain by mid-afternoon, it had been a very quiet day with few visitors on Brownsea. I was manning the videoscope in the Avocet hide, but I was the only person in the hide. To keep myself occupied, I started photographing some of the male Teal which were close to the hide and which were in various degrees of eclipse plumage. If you search for common species of Wildfowl, most photos online are pristine males and to a lesser extent females. I'm sure part of this is down to some photographers who aren't Birders, being unable to identify Ducks which aren't obvious adult males. Whereas, for others a Duck in grotty-looking plumage just isn't worth taking the photo in the first place. So, to combat that, here are some eclipse Teal.
Eclipse Male Teal
Eclipse Male Teal: The same individual
Eclipse Male Teal: The same individual
Eclipse Male Teal: A different individual which is only just starting to show traces of chestnut on its crown. Perhaps it's a first winter individual
Male Teal: This individual which wasn't as close has already completed its moult
After this Blog Post is posted, it will be interesting to see it Google prefers to show me photos of pretty male Teal, rather than these photos, which I search for "eclipse Teal". I'm not optimistic.

28 Oct 2024

28 Oct 24 - It's Long-tailed Tit Season Again

Long-tailed Tits are easily my favourite European species. I enjoy looking at them throughout the year, but especially so in the late Autumn, when their calls might end in attracting a more interesting migrant to join the flock.
Long-tailed Tit
Long-tailed Tit
Long-tailed Tit
This party of Long-tailed Tits only had a few Blue Tits, a couple of Chiffchaffs and a Goldcrest. But they were still worth watching.
Long-tailed Tit
Maybe my next Long-tailed Tits flock will have a stripy Warbler with them.

27 Oct 2024

27 Oct 24 - Two American Species In Dorset On The Same Day?

I had spent the morning watching the Durlston Red-eyed Vireo which showed erratically, but regularly in the field, after we saw it released. I left at lunchtime, to nip home for a quick lunch, before heading to Brands Bay for my 13:00 WeBS count.
The Durlston Red-eyed Vireo
Once the WeBS count was completed, I left for Portland Castle, where a Red-necked Grebe had been on view since it was found about Friday lunchtime. It should have been too far to travel for a Red-necked Grebe, but this individual has been suggested as potentially the American holbollii subspecies. Strictly, this is incorrect as it also occurs in North East Asia, including Mongolia, China, South Korea & Japan. The main range of the nominate subspecies is the Western Palearctic, but there are eBird records from as far East as Kazakhstan.
Red-necked Grebe: holbollii. On the face of it, this looks good for holbollii with a longer, largely yellow bill and it also appears to be longer-necked. However, based upon the comments from BBRC, it seems like it will be a tough job to prove it and get it accepted
I didn't know much about the American subspecies, which is sometimes referred to as Holboell's Red-necked Grebe. A bit of digging on the internet revealed there are two accepted UK records:
  • Gruinard Bay, Ross & Cromarty, shot (Sep 1925)
  • Quendale Bay, Shetland (Feb 24). This individual washed up dead a few days later & was confirmed by analysis of biometrics and DNA of the specimen.
Red-necked Grebe: grisegena. This is the nominate grisegena subspecies photographed at South Haven, Studland (4 Jan 15) which looks significantly shorter-billed
I also found this information from BBRC.
  • Identification of holbollii is problematic. It may show on average more yellow on the bill in breeding plumage, but firm subspecific identification rests on biometrics, holbollii being larger than the nominate subspecies. Claims of holbollii should include biometric evidence or details from a ringed or marked bird.
Red-necked Grebe: grisegena. This is the nominate grisegena subspecies photographed at Kuusamo, Finland (1 Jun 16) which again looks significantly shorter-billed
The Portland Castle Red-necked Grebe looked bigger in the field, but to be fair there were no other species with it to make a judgement. So, my comment is based upon many days of checking this Autumn's Great Crested Grebes in Brands Bay at varying ranges, including similar ranges on some occasions. It certainly looks longer-billed than the Red-necked Grebes I've seen around Studland over the last nearly three decades. Additionally, there is clearly a lot more yellow on the bill.

Fortunately, there are some excellent photos of the Portland Red-necked Grebe from the local toggers, including Pete Coe. Perhaps it would be possible to blow one of those photos up and do some measurements on the bill which would help to confirm the identify. While it wouldn't be possible to measure the exact bill length, the ratio of the bill length to the eye, compared to the bill depth at the nostrils might be possible to calculate. This could be included in the record, if it ends up getting submitted to BBRC. I think it looks to be a good candidate for holbollii. But I also think it's unlikely to be accepted by BBRC, based upon their criteria stated above.

Whatever happens to this record, it was an interesting individual to see. If it is proven to be holbollii, then seeing two different American rarities on the same day in Dorset would be impressive, as Dorset is the poor cousin of Scillies, Cornwall & Devon for American vagrants. The other thought I had whilst writing this Blog Post, I better make an effort to get some reasonable photos of the next Red-necked Grebe that turns up at Studland.

27 Oct 24 - All REV'ed Up

I had thought I had updated my mobile so that it wouldn't automatically change the clock for the end of British Summer Time, so the pre-dawn alarm went off at the correct time. That didn't work and the phone's alarm went off as it was starting to get light. By the time I had finished my breakfast, I realised I wouldn't be able to cover the St Aldhelms patch as thoroughly as I had planned before my 13:00 WeBS count at Brands Bay. I decided on Plan B: to head to Durlston for a few hours in the hope of a stripy-warbler. My departure time changed rapidly when I got a text saying Red-eyed Vireo trapped at Durlston & will be released at 08:15. That was in fourteen minutes time. Fortunately, the Durlston car park is about eight minutes drive away from my house and the release point was by the old info centre, which is right next to the car park. I picked up my coat, bins & camera and arrived in time to see Poole Ringer, Ian Lewis, walking happily towards where the only local Birder, Rob Johnson, was standing. With no sign of the Durlston ex-warden and only other Birder on site, Hamish Murray, Ian produced my first Dorset Red-eyed Vireo.
Red-eyed Vireo: An unexpected Dorset Tick on my doorstep
This is only the sixth Dorset record of a Red-eyed Vireo and the commonest American Passerine seen in Dorset over the years:
  • Portland Bill (23-24 Sep 23)
  • Portland Bill (14 Oct 16)
  • Littlesea, The Fleet (10 Oct 1995)
  • Southwell, Portland (3-5 Oct 1988)
  • Hengistbury Head (12 Oct 1987).
Red-eyed Vireo
Ian released the Red-eyed Vireo in the bushes by the car park. We saw it briefly perched in one of the trees, before diving into cover. I expected that would be the last we would see of it. Trapped & released Birds tend to disappear after being released. Albeit they sometimes remain in the area, as they pop up again in mist nets a day or two later. After about fifteen minutes, I tried some pishing and saw a bird with a big creamy supercilium near the top of the nearest Sycamore. It was too brief a sighting to see any other features, as it was skulking well inside the leaves, but it looked promising. I put Rob onto the area. Another round of pishing & it popped up and gave a clear enough view to confirm it was the Red-eyed Vireo: phew. Fortunately, Rob also got onto it, but it was too concealed for a photo. Thirty minutes later, we saw some Blue Tits appear and while watching them, again picked up a very skulky Bird deep in the leaves. I saw it fly & then relocated it sitting right in the open on a bare branch. I quickly called the directions to the small group of locals present as I raised the camera. Fortunately, everybody in the small group there got onto it & it remained long enough for some photos.
Red-eyed Vireo
Red-eyed Vireo
Red-eyed Vireo: It's that stare again
Red-eyed Vireo: A photo from a later sighting that morning
Over the rest of the morning, it showed about eight times for the slowly increasing group of Birders. Finally, at lunchtime, I had to call it a day as I needed a quite bite before I headed off for my WeBS count. It had been a great morning, especially given the almost complete absence of American Passerines in the UK this Autumn.
The twitch ninety minutes after it was released: If only more twitches were this low key