Looks superficially like a gull. A heavyset, medium-sized seabird with a short neck, stout body, large head, and long wings. The bill is stout and hooked, with two nasal tubes on the top edge.
Larger than a Ring-billed Gull, smaller than a Herring Gull.crow-sized
- Both Sexes
- Length: 15.3-19.7 in (39-50 cm)
- Weight: 15.9-35.3 oz (450-1000 g)
- Wingspan: 39.4-44.1 in (100-112 cm)