Merlin

Gull-billed Tern Identification

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Adult Description

Medium-sized tern. Stocky, with wide wings. Stout black bill. Tail short and notched. Black cap when breeding. Head nearly white during winter, with dark smudge behind eyes. Wings very pale gray with little black in tips. Body white. Legs black.

Immature Description

Immature resembles winter adult.
Relative Size

Relative Sizebetween robin and crowbetween robin and crow
Measurements
  • Both Sexes
    • Length: 13.0-15.0 in (33-38 cm)
    • Weight: 5.3-7.2 oz (150-205 g)