scholarly journals A Summary of the Food Habits of North American Coleoptera

1922 ◽  
Vol 56 (643) ◽  
pp. 159-165 ◽  
Author(s):  
Harry B. Weiss
Keyword(s):  
North American ◽  
Food Habits

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

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

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.

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 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

scholarly journals ON THE FOOD-HABITS OF NORTH AMERICAN RHYNCHOPHORA

1890 ◽  
Vol 22 (10) ◽  
pp. 200-203
Author(s):  
W. M. Beutenmuller
Keyword(s):  
North American ◽  
Food Habits ◽  
The Subject

In the present paper I have attempted to bring together all the FoodHabits of North American Rhynchophora (except the Scolytidæ) that have been placed on record in the various entomological publications, with the addition of my personal observations on the subject.Eugnamptus collaris and E. angustatus I have found plentifully upon the foliage of hickory and butternut trees.

North American weasels: resource utilization and distribution

1979 ◽  
Vol 57 (3) ◽  
pp. 504-520 ◽  
Author(s):  
D. A. Simms
Keyword(s):  
Resource Utilization ◽  
North American ◽  
Food Habits ◽  
Feeding Habits ◽  
Habitat Preferences ◽  
Microtus Pennsylvanicus ◽  
Foraging Strategies ◽  
Meadow Voles ◽  
General Distributions ◽  
Successional Communities

A livetrapping program, augmented by enclosure experiments, was undertaken to study resource utilization by ermine (Mustela erminea) and long-tailed weasels (M. frenata) in southern Ontario. Data on food habits, habitat preferences, foraging strategies, and competitive interactions were collected. Based on this information, a theory was formulated to explain the distribution or North American weasels. Ermine fed primarily on meadow voles (Microtus pennsylvanicus) and had body diameters closely approximating those of meadow voles, enabling them to readily exploit these items in subnivean and subterranean environments. Long-tailed weasels were larger and their feeding habits were more general. Dietary overlap between the two species in areas of sympatry was 57.5%. Regarding habitat preferences, ermine selected successional communities, whereas long-tailed weasels showed no preferences. Overlap in areas of sympatry was 76.9%.Long-tailed weasels appear to be limited in their northward distribution by snow cover which restricts the size of foraging spaces, thereby conferring an advantage to the smaller weasels. Conversely, the southward distributions of ermine and least weasels (M. nivalis) appear to be limited by interference interactions with long-tailed weasels. Where ermine and least weasels are sympatric, size differences and general distributions suggest that they hunt different prey in different habitats.

Size Dimorphism and Food Habits of North American Owls

The Condor ◽  
1970 ◽  
Vol 72 (3) ◽  
pp. 251-264 ◽  
Author(s):  
Caroline M. Earhart ◽  
Ned K. Johnson
Keyword(s):  
North American ◽  
Food Habits ◽  
Size Dimorphism
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