Rather stocky tern with a thick black bill. Breeding birds have an entirely black crown.
Stocky with a thick black bill and black legs. The crown is entirely black.
Breeding adult and juvenile with Black Skimmer
Gull-billed Terns often form mixed-species flocks while loafing on coastlines.
Note notched tail and flight and dusky tips to the primaries.
Juveniles have a smudgy gray patch behind the eye and a thick bill that is often pale at the base.
Stocky tern with a thick black bill and black legs. Nonbreeding birds have a dark smudge behind the eye.
Adult DescriptionMedium-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 DescriptionImmature resembles winter adult.
Relative Sizebetween robin and crow
- Both Sexes
- Length: 13.0-15.0 in (33-38 cm)
- Weight: 5.3-7.2 oz (150-205 g)
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