I'm aware that Bonaparte Gulls (124) fly by in large numbers. To date, I have never seen any. That changed today. It wasn't a large group and they weren't flying. But I'm struggling to figure out why some have pink legs and some have red legs. Bonaparte's have pink legs, so are the ones with red legs a different species? I need a gull expert! Help!
It's an age difference: if you look closely at the obviously pink-footed bird second from the right, you'll see that it also has a carpal bar and I think some smudges in the tertials, making it a first-cycle bird. Adults have much brighter feet.
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