Black Scoter Identification

The Four Keys to ID

• Size & Shape

  A stocky, medium-sized seaduck with a short tail, rounded head, and a broad bill that does not slope up to the forehead, as the Surf Scoter's bill does. Male Black Scoters have a rounded knob at the base of the bill.

  Relative Size

  Larger than a Long-tailed Duck, smaller than a White-winged Scoter.

  crow-sized

  Measurements

  • Male
  • • Length: 16.9-19.3 in (43-49 cm)
    • Weight: 30.4-38.8 oz (862-1100 g)
    • Wingspan: 27.6-28.4 in (70-72 cm)
  • Female

  © Ken Wright / Macaulay Library

• Color Pattern

  Adult males are silky black with an orange knob at the base of the bill. Female and immatures are rich brown with a blackish cap and a contrasting pale cheek.

• Behavior

  Black Scoters are usually seen in flocks, migrating in long lines or resting on the water. They dive for prey, mostly shellfish, in shallow water. Males begin courtship soon after settling into wintering areas. Their wings make whistling sounds and males frequent give whistled calls, which can be useful in locating these ducks.
• Habitat

  Winters on coastal ocean waters. Found during migration on inland lakes and larger rivers. Breeds on boreal forest lakes.