Beetle

Hope professionals comment on ids.
5 Feb 2010 Mai Po

白化紅咀鷗 Black-headed Gull





黑咀鷗 Saunder's Gull





黑尾鷗 Black-tailed Gull








黃腳(蒙古)銀鷗 Mongolian Gull





漁鷗 Pallas's Gull




灰背鷗 Slaty-backed Gull




西伯利亞銀鷗 Vega Gull (not sure)







遺鷗 Relict Gull

cmichaell

Great set of gull pics. Eight species on one tide [if you count Vega]! Just goes to show how good HK is for gulls in late winter.

Interesting to see the albino/leucistic Black-headed Gull in pic 1. I saw a previous one in Castle Peak Bay in March 1975 [see note in the 1977 Bird Report]. Olsen & Larrson note aberrant birds are not infrequent in this species.

As for your Vega gulls, see seperate discussion by Geoff of Owen's pics of same birds.

Mike Chalmers

Beetle

Thanks Mr. Tai for finding the white black-headed gull.
9 species in fact - i haven't included the Heuglins Gull