The Food Habits of North American Golden Eagles

1976 ◽  
Vol 95 (1) ◽  
pp. 231 ◽  
Author(s):  
Richard R. Olendorff
Keyword(s):  
North American ◽  
Food Habits ◽  
Golden Eagles

Sexual Dimorphism and Food Habits in Three North American Accipiters

The Auk ◽  
1966 ◽  
Vol 83 (3) ◽  
pp. 423-436 ◽  
Author(s):  
Robert W. Storer
Keyword(s):  
Sexual Dimorphism ◽  
North American ◽  
Food Habits

scholarly journals Morphometric Sex Determination of North American Golden Eagles

2013 ◽  
Vol 47 (2) ◽  
pp. 108-116 ◽  
Author(s):  
Al Harmata ◽  
George Montopoli
Keyword(s):  
Sex Determination ◽  
North American ◽  
Golden Eagles

Digestive organ morphology, diet, and guild structure of North American Anatidae

1987 ◽  
Vol 65 (7) ◽  
pp. 1812-1817 ◽  
Author(s):  
Gregory G. Barnes ◽  
Vernon G. Thomas
Keyword(s):  
North American ◽  
Food Habits ◽  
Feeding Habits ◽  
Feeding Guilds ◽  
Canada Geese ◽  
Guild Structure ◽  
Diet Diversity ◽  
Branta Bernicla ◽  
Carnivorous Species ◽  
Clangula Hyemalis

Discriminant function, cluster, and covariate analyses of gizzard, small intestine, and ceca weights were used to quantify the structure of feeding guilds and the effects of diet on gut morphology for 18 species of North American anatids. Guild structure based on gut measurements closely approximated that identified by generalized feeding habits. Herbivorous species such as Brant (Branta bernicla), Gadwall (Anas strepera), Redheads (Aythya americana), Canada Geese (Branta canadensis), and Mallards (Anas platyrhynchos) consistently had heavier gizzards and ceca than carnivorous species such as Common Goldeneye (Bucephala clangula), Bufflehead (Bucephala albeola), Oldsquaw (Clangula hyemalis), and Common Mergansers (Mergus merganser). Omnivorous species such as Lesser Scaup (Aythya afftnis), Greater Scaup (Aythya marila), and American Black Ducks (Anas rubripes) were characterized by heavy gizzards, intermediate ceca, and heavy intestines. The results provide further evidence that intestine size is primarily influenced by overall diet diversity and suggest that gut size may be used to indicate general food habits. The ability of waterfowl to adjust gut sizes and accommodate dietary changes is restricted to ranges dictated by the most frequently eaten foods. Thus, predictions of general food habits can be made without knowledge of the foods being consumed at a particular time and location.

Food Habits of Golden Eagles in Eastern Washington

The Murrelet ◽  
1983 ◽  
Vol 64 (3) ◽  
pp. 73 ◽  
Author(s):  
N. Verne Marr ◽  
Richard L. Knight
Keyword(s):  
Food Habits ◽  
Golden Eagles ◽  
Eastern Washington

scholarly journals ON THE FOOD-HABITS OF NORTH AMERICAN RHYNCHOPHORA

1890 ◽  
Vol 22 (12) ◽  
pp. 258-261
Author(s):  
W. M. Beutenmuller
Keyword(s):  
North American ◽  
Food Habits ◽  
Staten Island ◽  
Salix Fragilis

Orchestes niger and O. subhirtus are both found on willow when in bloom. (Harrington Can. Ent, 16, p. 119.)Orchestes niger and O. pallicornis were taken together in July on the leaves of low willows by Mr. Chittenden. O. ephippiatus was found in abundance on willow (Salix fragilis) by Mr. C.W Leng and myself on Staten Island, N.Y.

scholarly journals Golden Eagles (Aquila chrysaetos) breeding in Wapusk National Park, Manitoba

2013 ◽  
Vol 127 (2) ◽  
pp. 180 ◽  
Author(s):  
N. C. Asselin ◽  
M. S. Scott ◽  
J. Larkin ◽  
C. Artuso
Keyword(s):  
North American ◽  
National Park ◽  
Nest Density ◽  
Canada Goose ◽  
Golden Eagle ◽  
Aquila Chrysaetos ◽  
Breeding Range ◽  
The North ◽  
Golden Eagles ◽  
Conservation Concern

The North American subspecies of the Golden Eagle (Aquila chrysaetos) is of conservation concern throughout Canada. The species is not currently known to breed in Manitoba. In 2011 and 2012, during the course of surveys in Wapusk National Park of Canada in northeastern Manitoba, seven pairs of Golden Eagles and one sub-adult were observed. The identification of nests in proximity to three pairs, the presence of an adult at one nest, and visible white down feathers on two nests confirm breeding and extend the breeding range of the Golden Eagle into Manitoba, where breeding was previously uncertain. The three occupied nests were 14 km (n = 2) and 31 km (n = 1) from the nearest adjacent occupied nest identified. Foraging on Canada Goose (Branta canadensis) goslings was observed. Further research is needed to determine the overall nest density and the diet of Golden Eagles in northeastern Manitoba.

scholarly journals Food Habits of North American Diving Ducks

Bird-Banding ◽  
1939 ◽  
Vol 10 (4) ◽  
pp. 178
Author(s):  
Margaret M. Nice ◽  
Clarence Cottam
Keyword(s):  
North American ◽  
Food Habits ◽  
Diving Ducks
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