- Large waterbird.
- White with black tail and black along back of wings.
- Long, pointed, yellowish bill.
- Long pointed tail.
- Long pointed wings.
- Dark face mask.
Immature DescriptionJuvenile has dark head, back, and wings, with a white collar, a white rump, and a clean white underside.
Relative Sizegoose-sized or larger
- 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)