I have returned several times more to see that rare and beautiful little Black-headed Gull. He wasn’t alone but was feeding in a mixed flock of gulls and ducks. All seemed perfectly peaceful at first. Before too long, he was squawking noisily, barking orders, and flying aggressively toward any other gull that crossed his path. Very comical actually, as he was smaller than all the others nonetheless, they took orders readily and moved aside.

Black-headed Gull vs. Ring-billed Gull Battle 

Wonderfully animated surf dancer!

Bonaparte’s Gull left, Black-headed Gull right

A friend wrote wondering if I was sure what we are seeing is a Black-headed Gull. He, as was I initially, wondering if it was a Bonaparte’s Gull. Bonaparte’s have black bills, whereas the Black-headed Gull has a black-tipped red bill, along with red feet and legs. I found this terrific image showing the progressive molting stages of a Black-headed Gull while looking up Black-headed Gulls.

By the way, the head feathers of the Black-headed Gull in breeding plumage are really not black, but chocolate brown. Then again, there is an actual Brown-headed Gull (Chroicocephalus brunnicephalus). Whoever gave name to these gulls!!
Black-headed Gull in breeding plumage, photo courtesy Google image search