Greater Scaup Photos
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Greater Scaup 1 ...
Greater scaup Aythya marila
Identification Tips:
Length: 13 inches Wingspan: 31 inches
Small, compact diving duck
Rounded crown
Yellow eyes (brown in immatures)
Blue bill with black nail at tip ...
Greater Scaup
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Greater Scaup
Relatives in same Genus
Lesser Scaup (A. affinis)
Redhead (A. americana)
Ring-necked Duck (A. collaris)
Tufted Duck (A. fuligula)
Canvasback (A. valisineria) ...
Greater Scaup (Aythya marila)
No photo of the Greater Scaup available.
The Greater Scaup is from the order Anseriformes. Anseriformes are birds, with over 150 species belonging to this order.
Greater Scaup: Large diving duck with glossy green-black head, white sides and belly, black tail, neck, breast and barred gray flanks and back. Female is brown overall with a white ear patch and bold white patch at base of black-tipped gray bill.
Greater Scaup Behaviour
No observations regarding Greater Scaup behavior have been submitted to the database yet.
Interesting Facts about Greater Scaups ...
The Greater Scaup frequents calm or slow-moving water, and is found on salt water more often than the Lesser Scaup. This scaup breeds on the large lakes and bays of the Arctic flatlands, especially the tundra. Smooth shorelines are generally avoided.
Greater Scaup
(Aythya marila)
Status: Migrant.
Last recorded on site in 2011
The Patuxent web-site provides more general information about this species.
This bird occurs on site as an uncommon and irregular migrant.
Occ lays eggs in nests of other Greater Scaups; clutches >11 likely result from such brood parasitism. Nests occ clustered, appearing semicolonial. Male deserts when incubation begins. Females often combine broods and cooperatively tend and defend.
Greater Scaup
Aythya marila (Linnaeus)
Status Fairly common transient, uncommon in winter. Autumn arrivals are generally first reported in October (average 18 October, earliest 16 September).
Scaup, Scaup Duck, Greater Scaup Duck, Bluebill, Broadbill
Bird Family :
Anatini - Typical ducks ...
Greater Scaup
A common sight on San Francisco Bay and elsewhere on the west coast, Scaup are sometimes seen in rafts of hundreds, even thousands. White flank, gray back, black head, gray bill. Not very colorful.
Greater Scaup Aythya marila. Uncommon to rare in winter, spring, and fall in Gulf Coast and Tennessee Valley regions. Occasional in winter and spring in Inland Coastal Plain and Mountain regions. Found on relatively deep lakes, rivers, and bays.
Greater Scaup
Winter Sighting Information: uncommon
Nest on or near Refuge? no
Lesser Scaup
Winter Sighting Information: uncommon
Nest on or near Refuge? no ...
Greater Scaup Aythya marila: Upper Newport Bay Ecological Reserve, Newport Beach, CA, 01 Jan
Lesser Scaup Aythya affinis: Lake Perris State Recreation Area, Perris, CA, 03 Jan ...
Counted 110 greater scaup in Pilgrim Lake. Similar to what Mark Faherty found in Wellfleet, the back shore of Truro was lively at 3 PM.
Lesser Scaup females show the characteristic darker iris (bright yellow in Greater Scaup males and females) at closer distances.
Greater scaup (Aythya marila)
Red-breasted merganser (Mergus serrator)
Gadwall (Anas strepera)
Goldeneye (Bucephala clangula)
Mute swan (Cygnus olor)
Wigeon (Anas penelope)
Steller's eider (Polysticta stelleri)
Northern pintail (Anas acuta) ...
Greater Scaup (Aythya marila)
Greater White-fronted Goose (Anser albifrons)
Green-winged Teal (Anas crecca)
Hooded Merganser (Lophodytes cucullatus)
Lesser Scaup (Aythya affinis)
Long-tailed Duck (Oldsquaw) (Clangula hyemalis) ...
All are less common during the summer months and in more southern areas. The Greater Scaup is found along the coasts. Only the Ring-neck Duck breeds in Florida, but not regularly.
NCS
SpSuFW ...
THE SCAUP DUCK.--FLOCKING FOWL.
[Greater Scaup.]
FUGIGULA MARILA, Linn.
[Aythya marila.] ...
Aythya marila - Greater Scaup
Aythya affinis - Lesser Scaup
Somateria
Somateria mollissima - Common Eider
Somateria spectabilis - King Eider
Somateria fischeri - Spectacled Eider
Polysticta ...
 See also: Scaup, Duck, Ring-necked Duck, Scoter, Gadwall
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