Aves | Anseriformes
Environment: milieu / climate zone / depth range / distribution range
Others; brackish. Subtropical
Eastern Pacific, Western Atlantic and the Arctic: Alaska, Canada and USA. Subtropical to polar.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 54.0 cm TL male/unsexed; (Ref. 94965); max. published weight: 950.00 g (Ref. 356)
Culmen: 3.7 cm; wing: 24.4 cm (Ref. 356). Large duck; male: black overall; white forehead, nape and base of bill; orange bill; female: dark brown overall; light cheek (Ref. 94965).
Surface diving; coastal. Winters from Alaska to Baja California, Nova Scotia to Florida, Gulf of Mexico (Ref. 356).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
SAUP Database. 2006. (Ref. 356)
IUCN Red List Status (Ref. 119314)
CITES status (Ref. 108899)
Threat to humans
| FishSource |
Estimates of some properties based on models
): 3.8 - 23.7, mean 8.8 (based on 928 cells).