Benjamin M. Clock:
Ring-billed Gull
Benjamin M. Clock:
Ring-billed Gull
Benjamin M. Clock:
Ivory Gull
Benjamin M. Clock:
Ivory Gull foraging
Benjamin M. Clock:
Heerman's Gull
Benjamin M. Clock:
California Gull
Benjamin M. Clock:
Heermann's Gull
Benjamin M. Clock:
Western Gull
Benjamin M. Clock:
Western Gull
Benjamin M. Clock:
Western Gull on nest
Benjamin M. Clock:
Ivory Gull eating chicken
Benjamin M. Clock:
Black-headed Gull, Brace Cove, Gloucester, MA 10 February 2012