Common Gull vs Great Black-backed Gull

Common Gull

Larus canus

Large413 gCoastal

Adult common gulls are 40–46 cm (16–18 in) long and a wingspan of 100–115 cm (39–45 in), noticeably smaller than the herring gull and slightly smaller than the ring-billed gull. It is further distinguished from the ring-billed gull by its shorter, more tapered bill, which is a more greenish shade of yellow and is unmarked during the breeding season. The body is grey above and white below. The legs are yellow in breeding season, becoming duller in the winter.

ID text from Wikipedia, CC BY-SA 4.0

Recorded by Sonothèque ADVL · Call, duet, flight call · Vains, Manche, Normandie, France · CC0

Photo: Alexis Lours · CC BY 4.0

Great Black-backed Gull

Larus marinus

Huge1.6 kgCoastal

This is the largest gull in the world, considerably larger than a herring gull (Larus argentatus); only two other gulls, glaucous gull (Larus hyperboreus) and Pallas's gull (Ichthyaetus ichthyaetus), come close to matching this species in size. It is 64–79 cm (25–31 in) long with a 1.5–1.7 m (4 ft 11 in – 5 ft 7 in) wingspan and a body weight of 0.75–2.3 kg (1 lb 10 oz – 5 lb 1 oz). In a sample of 2009 adults from the North Atlantic, males were on average 1,830 g (4 lb 1⁄2 oz) and females were on average 1,488 g (3 lb 4+1⁄2 oz).

ID text from Wikipedia, CC BY-SA 4.0

Recorded by Grégoire Chauvot · Kvaløyvågen, Tromsø, Troms og Finnmark, Norway · CC0

Photo: Tim · CC BY 2.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Common Gull and Great Black-backed Gull.