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ZEISS. Discover the fascinating world of birds, and win a birding trip to Columbia

Black-backed Gull –*Greater or Lesser? 13.10.2016, Burlington, Ontario (1 Viewer)

D Halas

Well-known member
I saw this gull earlier today in Burlington, Ontario, on Lake Ontario. It's clearly a juvenile or first-winter black-backed gull, but I'm having trouble deciding if it's a somewhat stocky-looking Lesser Black-backed, or a smallish Greater Black-backed. It was a fair distance away, so the first two pictures are unfortunately the clearest ones I was able to get of it; the third one shows the gull close to a Ring-billed Gull, to give a sense of its proportionate size.
 

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Tim100

Well-known member
Yes I'm being stupid. Thinking LBBG was smaller from memory. Proportion compared to RBG is spot on. GBBG would be a fair chunk bigger. Massive birds!
 
ZEISS. Discover the fascinating world of birds, and win a birding trip to Columbia
ZEISS. Discover the fascinating world of birds, and win a birding trip to Colombia
ZEISS. Discover the fascinating world of birds, and win a birding trip to Colombia
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