Aythya marila

Greater Scaup

Flickr photo 'Aythya marila' by: Michael Rosenberg.

Flickr photos above were identified by the individual photographers but not reviewed by EoPS. Contact us to report errors.

Species group: Birds

Found in: Salish Sea-reliant birds, Terrestrial vertebrates: birds, Puget Sound Partnership indicator species: birds

Data Sources

Classification

Kingdom:

Animalia

Phylum:

Craniata

Class:

Aves

Order:

Anseriformes

Family:

Anatidae

Genus:

Aythya

Encyclopedia of Life

For more info, visit:

Source:
http://eol.org/pages/31429284/details

NatureServe

NatureServe Explorer

Source:
ELEMENT_GLOBAL.2.102413

Classification

Other Global Common Names:

Pato Boludo-Mayor - fuligule milouinan

Informal Taxonomy:

Animals, Vertebrates - Birds - Waterfowl

Formal Taxonomy:

Animalia - Craniata - Aves - Anseriformes - Anatidae - Aythya

Ecology and Life History

Migration:

false - false - true - Migrates northward in spring, usually arriving on breeding grounds in April-May (late May-early June in far north). Departs far north by end of September, southward migration through U.S. occurs mostly in October-November (Terres 1980). Scaup that breed in northern Alaska, northern Yukon, and Mackenzie Delta winter on the Atlantic and Gulf coasts of the southeastern U.S. (Johnson and Herter 1989). See Johnson and Herter 1989 for information on early summer molt migration in northern Alaska and northwestern Canada.

Non-migrant:

false

Locally Migrant:

false

Food Comments:

Feeds on aquatic plants and animals. Coastally mollusks (clams, scallops, mussels, etc.) comprise a significant portion of the diet. In other areas eats seeds, leaves, stems of plants (sedges, pondweeds, muskgrass, wild celery, etc.).

Reproduction Comments:

Clutch size averages about 8-9. Incubation: 23-27 days, by female. Males usually abandon females in early incubation. Young are tended by female, fledge in 9-10 weeks. May nest in colonies of 50+ pairs.

Ecology Comments:

May gather in winter flocks of up to 50,000 individuals.

Length:

Unit of Length:

Weight:

957

Unit of Weight:

grams

Conservation Status

NatureServe Global Status Rank:

Global Status Last Reviewed:

1996-11-21

Global Status Last Changed:

1996-11-21

Other Status:

LC - Least concern

Distribution

Conservation Status Map:

Global Range:

H - >2,500,000 square km (greater than 1,000,000 square miles) - H - Holarctic. BREEDS: in Northern America, northern Alaska east across Canada to Hudson Bay, central Quebec, and New Brunswick (McAlpine et al. 1988), south to northwestern British Columbia, southeastern Michigan. WINTERS: southeastern Alaska south to Baja California; from eastern Great Lakes area and Canadian Maritime Provinces to southern Florida and Gulf Coast; casual in Hawaii. Primary wintering areas include the coastal Pacific Northwest, southern and eastern Great Lakes, and Atlantic coast centering around Long Island Sound (Root 1988).

Global Range Code:

Global Range Description:

>2,500,000 square km (greater than 1,000,000 square miles)

Search for Species

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Abietinaria sp

Aythya marila

Greater Scaup

Data Sources

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Aythya marila

Greater Scaup

Data Sources

Table of Contents

NatureServe Explorer

Search for Species

Main menu

Search form

Species Lists

Resource attribution

External links

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