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ID Please, Vega Gull?

西伯利亞銀鷗 Vega Gull (First Winter)  ?
南生圍 (NSW) 5-Feb 2012
Thanks in advance HKBWS assistance to ID this bird.:handshake
t
[img]http://www.bluebirdservices.com/My%20Photos/cntlaw-2012/20120205-NSW-VegaGull-01.jpg[/img]
[img]http://www.bluebirdservices.com/My%20Photos/cntlaw-2012/20120205-NSW-VegaGull-02.jpg[/img]
[img]http://www.bluebirdservices.com/My%20Photos/cntlaw-2012/20120205-NSW-VegaGull-03.jpg[/img]
[img]http://www.bluebirdservices.com/My%20Photos/cntlaw-2012/20120205-NSW-VegaGull-04.jpg[/img]

Yes, you are correct this is a first-winter gull.

This seems a good fit for [i]taimyrensis[/i] Hueglin's Gull which is likely an integrade between Heuglin's and Vega Gull.  The darker greater covert bar and pale 'windows' on the inner primaries is typical of [i]taimyrensis[/i] observed in Japan. The pale base to the bill is more extensive than on typical [i]taimyrensis[/i] (which general has all dark or just faint pale base) but might indicate this bird has a bit more Vega progeny than most Hueglin's Gull.

[[i] Last edited by brendank at 26/02/2012 23:54 [/i]]

[quote]Original posted by [i]brendank[/i] at 26/02/2012 23:52 [url=http://www.hkbws.org.hk/BBS/redirect.php?goto=findpost&pid=47034&ptid=15892][img]http://www.hkbws.org.hk/BBS/images/common/back.gif[/img][/url]
Yes, you are correct this is a first-winter gull.

This seems a good fit for taimyrensis Hueglin's Gull which is likely an integrade between Heuglin's and Vega Gull.  The darker greater covert bar and ... [/quote]


Hi Brandan,
Thanks for your time to help out the ID.
That's a lot to remember and to observe.:loveliness: :handshake
t