Thick-billed Murre Identification

Adult Description

  • Medium-sized waterbird.
  • Black back and head, white underside.
  • Rather stout, pointed bill.
  • Throat white in nonbreeding plumage.

Immature Description

Similar to nonbreeding adult, but has slimmer, shorter bill and browner upperparts.
Relative Size

Relative Sizecrow sizedcrow-sized
Measurements
  • Both Sexes
    • Length: 17.7 in (45 cm)
    • Weight: 26.5-52.2 oz (750-1481 g)