The Four Keys to ID
- Size & Shape
A large waterbird with a very long, slender neck, a fine, straight bill, and a relatively small body.
Relative Size
Larger and more slender than a Mallard, much smaller and slighter than a Common Loon.
crow-sizedMeasurements
- Both Sexes
- Length: 21.6-29.5 in (55-75 cm)
- Weight: 25.3-44.4 oz (718-1258 g)
- Wingspan: 22.8-25.2 in (58-64 cm)
- Color Pattern
- Behavior
- Habitat
Regional Differences
There are two subspecies: mostly migratory transitionalis of the United States and Canada, which is larger, with longer wings; and clarkii, which breeds only on the Mexican Plateau.