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Merlin Bird ID

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    Black-headed Gull Identification

    Adult Description

    • Small gull.
    • White triangle in outer part of wing.
    • Blackish under tip of wing.
    • Back pale gray.
    • Underparts white.
    • Head dark brown during breeding.
    • Dark spot behind eyes in winter.

    Immature Description

    Juvenile with much brown on head, neck, and back, a dark bar across the wing, and a black tail tip. Immature similar to nonbreeding adult, but with brownish black bar across the base of the wing, much black in the outer wing, and a black band across the tip of the tail. In first breeding plumage the black head is partly mottled with white.
    Relative Size

    Relative Sizebetween crow and goosebetween crow and goose
    • Both Sexes
      • Length: 13.4-14.6 in (34-37 cm)
      • Weight: 6.7-14.1 oz (190-400 g)
      • Wingspan: 39.4-43.3 in (100-110 cm)