Compare with Similar Species
Click on an image to compare
Adult Description
- Large, dark water bird.
- Long body and long neck.
- Medium-sized bill is blunt or hooked at tip.
- White patch at base of bill.
Immature Description
Juvenile with dirty brown neck and white belly; variable, may be uniformly mottled. Shows only hint of white face patch. Skin at base of bill yellowish.Relative Size

between crow and gooseMeasurements
- Both Sexes
- Length: 33.1-35.4 in (84-90 cm)
- Weight: 91.7-130.5 oz (2600-3700 g)
- Wingspan: 51.2-63.0 in (130-160 cm)