Belcher's Gull vs Yellow-footed Gull

Belcher's Gull

Larus belcheri

Large639 gMarine

Belcher's gull is 48–54 centimetres (19–21 in), with a wingspan of about 120 cm (47 in). The sexes are similar in appearance, and in the breeding season, the adult has a white head, very pale grey neck, and white underparts. The mantle and back are greyish-black, and the tail is white with a broad black subterminal band and a white trailing edge. The wing coverts and primaries are black and the secondaries dark grey with white tips. The eye is black, the bill yellow with a distinctive red and black tip, and the legs and feet yellow.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Ron Knight from Seaford, East Sussex, United Kingdom · CC BY 2.0

Yellow-footed Gull

Larus livens

Large1.3 kgMarine

Adults are similar in appearance to the western gull with a white head, dark, slate-colored back and wings, and a thick yellow bill. Its legs are yellow, though first winter birds do display pink legs like those of the western gull. It attains full plumage at three years of age. This species is tied with slaty-backed gull for the world's fourth-largest gull species and is one of the largest gulls in the world, being slightly larger than the western gull. It measures 53 to 72 cm (21 to 28 in) in length and spans 140 to 160 cm (55 to 63 in) across the wings.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Laura Gaudette · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Belcher's Gull and Yellow-footed Gull.