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Black Guillemot Identification
Nonbreeding
Nonbreeding birds in the high arctic (mandtii subspecies) are whiter overall than nonbreeding birds in the Atlantic.
© Alvan Buckley | Macaulay LibraryNewfoundland and Labrador, February 19, 2017Nonbreeding
Nonbreeding birds have whitish heads and underparts.
© Christoph Moning | Macaulay LibraryNorðurland eystra, March 02, 2014Adult Description
- Medium-sized to small waterbird.
- Thin, straight bill.
- Large white wing patches.
- Bright red feet.
- Relatively long, thick neck.
- All black with white wing patches in summer.
- Mostly white with dusky back in winter.
Immature Description
Similar to nonbreeding adult, but with more mottling on head and neck, and black markings breaking the white wing patches.Relative Size
crow-sizedMeasurements
- Both Sexes
- Length: 11.8-12.6 in (30-32 cm)
- Weight: 11.3-17.1 oz (320-485 g)
- Wingspan: 20.5-22.8 in (52-58 cm)
