A large, heavy-bodied seabird (and largest of all terns), with a large head; thick, straight, pointed bill; and shallowly forked tail. The long, pointed wings are broad for a tern.
The largest tern species. Larger than a Ring-billed Gull, smaller than a Herring Gull.crow-sized
- Both Sexes
- Length: 18.5-21.3 in (47-54 cm)
- Weight: 18.7-27.6 oz (530-782 g)
- Wingspan: 49.6-50.4 in (126-128 cm)