|This ring-billed gull, Larus delawarensis, is in breeding plumage; the bird's head and breast are snowy white. I took the picture on the East River in Brooklyn last week. Can spring be far behind?
|This is an adult ring-bill in non-breeding plumage, taken a few months ago in the same place. Its head and neck are faintly streaked with grayish brown.
|Check out the red eye ring and red at the corner of the mouth on the breeding adult. Click to enlarge.