A heavyset seabird with long, pointed wings, stout neck and head, and fairly long, pointed tail. It has short legs with large, webbed feet. The bill is long, heavy, and daggerlike.
Relative Size
Larger than a Great Black-backed Gull, smaller than a Northern Gannet.


Measurements
- Both Sexes
- Length: 29.1-33.9 in (74-86 cm)
- Weight: 45.9-82.9 oz (1300-2350 g)
- Wingspan: 63.0 in (160 cm)