The head shape of Herring Gulls seems to change seasonally
I always enjoy studying Herring Gulls, just looking at variation and trying to categorize the birds into age, sex, and regional groups. Last winter I was watching the gull flock at Turners Falls, MA, paying special attention to when the adults molted into breeding plumage. My thought was that the early-molting birds would be from …
The head shape of Herring Gulls seems to change seasonally Read More »