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Old Tuesday 7th March 2017, 22:05   #3226
Don Listerino
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Hi Lou, thanks very much for your help,

Joe
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Old Sunday 23rd April 2017, 07:36   #3227
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Hello!

There is a place near Moscow (Biserovo fishery ponds) where all gull enthusiasts go. The most abundant spieces are Common Gulls, Black-headed Gulls, Herring Gulls and Caspian Gulls. Depending on the season and the luck one can see fuscus LBBG, Heuglin's Gulls and more rarely GBBG and Glaucous Gulls.

I suspect there should be 1cy Steppe Gulls (barabensis) in autumn. Is there a way to separate them from Caspian Gulls?
Also no-one registered YLGs, which seems strange. I suspect we just cannot single them out from huge flocks of Herring/Caspians

Here is the typical mixture of Herring and Caspian Gull, photographed in October
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Old Thursday 18th May 2017, 09:32   #3228
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GBBG with yellow-ish legs.

In the past week, here on the Camel Estuary in Cornwall, I have noticed at least 3 adult Great Black-Backed Gull (Larus marinus) with straw-yellow, some Greenish yellow legs. What do you think the most likely explanation for that could be? Hormonal mechanisms, hybrid of 'Larus michahellis' or 'Larus fuscus', or even hybrid 'Larus dominicanus' extending north?
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Old Thursday 18th May 2017, 09:42   #3229
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yellowish legged GBBG have occured ever since (in e.g. baltic sea they are a regular sight), but this year particularly there seems to be going on something in the north atlantic/north sea: colour ringed herring gulls which in other years had normal fleshy coloured legs this year show yellow legs as noted by some dutch birders. speculations goes towards nutrition with maize, but who knows what humans have have added somewhere in their feeding places.
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Old Friday 19th May 2017, 19:34   #3230
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yellowish legged GBBG have occured ever since (in e.g. baltic sea they are a regular sight), but this year particularly there seems to be going on something in the north atlantic/north sea: colour ringed herring gulls which in other years had normal fleshy coloured legs this year show yellow legs as noted by some dutch birders. speculations goes towards nutrition with maize, but who knows what humans have have added somewhere in their feeding places.
Interesting stuff Lou, Thank you. I suppose that the leg colour is carotenoid-based, a parasite could be to blame.
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Old Tuesday 1st August 2017, 19:48   #3231
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Kastoria lake ,July 2017
Is this a not adult YLG?
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Old Tuesday 1st August 2017, 21:33   #3232
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yes, that's an exceptionally advanced one. reminds me of a bucharest bird some years ago..it is in fact just a 2cy
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Old Tuesday 1st August 2017, 21:38   #3233
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Interesting stuff Lou, Thank you. I suppose that the leg colour is carotenoid-based, a parasite could be to blame.
Or this . . .

http://www.huffingtonpost.co.uk/entr...b0069193654160
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Old Wednesday 2nd August 2017, 13:59   #3234
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yes, that's an exceptionally advanced one. reminds me of a bucharest bird some years ago..it is in fact just a 2cy
Thank you ,Lou!
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Old Thursday 3rd August 2017, 17:55   #3235
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Is this a juvenile Larus audouinii ???
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Old Thursday 3rd August 2017, 20:11   #3236
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no, this is a juv michahellis but i guess you've heard about that recent record of a young audouin's at kastoria lake in july? which is not that far away from you. and way more inland.
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Old Thursday 3rd August 2017, 21:48   #3237
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Can anyone ID the gull shown here?

https://twitter.com/docmartin2mc/sta...76180171022336
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Old Friday 4th August 2017, 05:00   #3238
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no, this is a juv michahellis but i guess you've heard about that recent record of a young audouin's at kastoria lake in july? which is not that far away from you. and way more inland.
Thank you,Lou!
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Old Friday 4th August 2017, 08:08   #3239
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snow-owl-gull with a carrot as bill
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Old Saturday 5th August 2017, 00:58   #3240
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Good one Lou!

A proper gull this time please; San Luis Obispo, California coast - labelled as Thayer's, but looks a thickset brute with a heavy bill - I'm suspecting Western?

https://commons.wikimedia.org/wiki/F...274773045).jpg
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Old Tuesday 8th August 2017, 10:54   #3241
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Common Tern X2 and the third is a White-winged Tern?
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Old Tuesday 8th August 2017, 10:58   #3242
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The two ...are they Whiskered Terns?
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Old Tuesday 8th August 2017, 11:01   #3243
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The Tern ...is it a black Tern?
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Old Tuesday 8th August 2017, 12:35   #3244
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apart from the (red billed) common terns all others i can see are either adult or juvenile white-winged black terns.
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Old Tuesday 8th August 2017, 14:14   #3245
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Thank you,Lou.
Is this then an adult Whiskered Tern?
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Old Tuesday 8th August 2017, 14:20   #3246
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What about this one?
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Old Tuesday 8th August 2017, 16:20   #3247
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A proper gull this time please; San Luis Obispo, California coast - labelled as Thayer's, but looks a thickset brute with a heavy bill - I'm suspecting Western?

https://commons.wikimedia.org/wiki/F...274773045).jpg
Anyone?
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Old Tuesday 8th August 2017, 16:28   #3248
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nutty, west coast gulls are a nightmare with all those hybrids hanging around but i tend to agree with you it doesn't look like a thayer's gull. actually it doesn't look like any typical juvenile west coast gull. the fact that it hasn't replaced any scaps by february would favour thayeri but that smooth pattern is nothing i have seen in juveniles of this species. maybe it's a dodgy olympic gull :)
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Old Tuesday 8th August 2017, 16:29   #3249
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Thank you,Lou.
Is this then an adult Whiskered Tern?
yes, adult whiskered tern
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Old Tuesday 8th August 2017, 16:29   #3250
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What about this one?
seems to be a 2cy white-winged black tern
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