Andrew Tweed, Josh Jones and Mark Golley
Thanks to keen gull watchers, readers of rings and the power of social media, we joined up some dots. Andrew Tweed kicks off with this ringed Caspian Gull at Rainham, Essex on 17th January:
Great gulling session at Rainham today with 6 Caspians. 2 x 1st win , 2 x 2 nd win , 1 x third winter and an adult. Best tally for a couple of seasons. One of the 1st winters had a yellow ring on its right leg with PNEL written on it. I have had green polish ringed birds before but not yellow.
Any ideas? Kind regards, Andy Tweed
Andy’s request for info was ‘tweeted’ out through Birdingfrontiers. Within a matter of hours loads of clear data emerged. Thanks especially to Josh Jones, Mark Golley. Click:
Thanks Martin ~ second one of mine in recent years that’s gone from Norfolk to Essex (one went to Pitsea where Steve Arlow saw it). Herring Gulls too of course, but nothing as as funky as a Caspian….
I do love these UK movements. I just knew PNEL would be picked up somewhere else this winter, but wondered if it may go inland to Milton or the Midlands. Essex was the obvious choice tho’ and I’m glad someone has picked him (it’s a beast) up again.
Nice too as it consolidates what we kind of know here about these Norfolk – London/London – Norfolk gull movements.
Bit of background:~ I found PNEL on the evening of October 21st then it was back on October 28th and was seen, almost every night to at least November 9th.
You’ll have seen from the ringing data that you passed on to me where and when it was ringed ~ interestingly this is the second cachinnans from the same Polish colony to make it to Cley ~ I found one here in July 2012 which has subsequently appeared in the Netherlands and Northumberland.
The natal site is in the far SSE of Poland, not that far from the Czech border, due south of Wroclaw.
PNEL was the first in a remarkable (for Cley) run of new 1w cachinnans last autumn. I logged (and photographed) nine different 1w’s between 21st October and 12th November (eight of them between 21st-31st!) ~ an unprecendented run of birds here. There was at least one other 1w that I didn’t see that I was sent shots of….incredibly exciting!
Josh Jones helpfully fills out he picture a little more:
Find the enclosed the details for yellow-ringed ‘PNDZ’ that I saw in Peterborough on 24th and 27th December 2013.
I’m certain that Andy Tweed’s bird will be from the same ringing scheme in Poland. In fact, ‘PNEL’ sounds like it will be very close in line, so it wouldn’t surprise me if it’s from the same colony as mine, and perhaps even ringed on the same day!
Andy can submit his sighting of PNEL here at http://ring.stornit.gda.pl/Stw.aspx – they usually only take a couple of working days to respond.
“Chicks ringed in mixed colonies where Larus cachinnans is the dominant species (it is most likely that these chicks are cachinnans, but other species and hybrids are not excluded); this is the most common code, because most colour-ringed birds are from southern Poland, where this species is the dominant one.”
Not overly surprising revelations, but it adds further weight to the belief that the majority of British Caspian Gull records must originate from these Polish colonies.