Black scoter
Black scoter | |
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Adult male | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Anseriformes |
Family: | Anatidae |
Genus: | Melanitta |
Subgenus: | Oidemia |
Species: | M. americana
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Binomial name | |
Melanitta americana (Swainson, 1832)
| |
Synonyms | |
Melanitta nigra americana |
The black scoter or American scoter (Melanitta americana) is a large
Together with the
Description
This large sea duck is characterised by its bulky shape and large bill. The adult male is all black with a very bulbous bill which is mostly yellow. The female is a brown bird with pale cheeks, very similar to female common scoter. The adult female averages about 980 g (2.16 lb) and 45 cm (18 in) in length, while the adult male is on average 1,100 g (2.4 lb) and 49 cm (19 in) in length.
This species can be distinguished from other scoters, apart from common scoter, by the lack of white anywhere on the drake, and the more extensive pale areas on the female.
Standard Measurements[4][5] | |
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length | 430–550 mm (17–21.5 in) |
weight | 950 g (2.09 lb) |
wingspan | 710 mm (28 in) |
wing | 213–233 mm (8.4–9.2 in) |
tail | 83–97 mm (3.3–3.8 in) |
culmen | 42–45.5 mm (1.65–1.79 in) |
tarsus | 45–48.5 mm (1.77–1.91 in) |
Vocalisations
The black scoter and common scoter have diagnosably distinct vocalisations.[6]
Distribution and habitat
The black scoter breeds in the far north of
Some birds may over-winter on the Great Lakes. This species is a very rare vagrant to western Europe; only drakes are safely identifiable out of range, so females are likely to be undetected.
Ecology
This species dives for
Black scoters nest later than most other ducks in North America. Pairs form in late winter or spring. The lined nest is built on the ground close to the sea, lakes or rivers, in woodland or
The male performs a diagnostic downward head movement when stretching his wings.[5]
References
- . Retrieved 12 November 2021.
- ISBN 978-1-4081-2501-4.
- ^ a b "Black Scoter (Melanitta nigra)". Sea Duck Information Series. Sea Duck Joint Venture. 2003. Retrieved 15 November 2006.
- ^ Godfrey, W. Earl (1966). The Birds of Canada. Ottawa: National Museum of Canada. p. 358.
- ^ ISBN 0-679-45122-6.
- S2CID 59519919.
- JSTOR 1362896.
- ^ Deghi, Gary; et al. (1998). Environmental Impact Report for the Pillar Point East Harbor Master Plan (Report). San Mateo County Harbor District: Earth Metrics Inc.
External links
- Black Scoter Species Account and Photo Gallery – Sea Duck Joint Venture
- "Black scoter media". Internet Bird Collection.
- Black scoter photo gallery at VIREO (Drexel University)
- Black Scoter Species Account – Cornell Lab of Ornithology
- Interactive range map of Melanitta americana at IUCN Red List maps