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Author : U.S. Fish and Wildlife Service
Publisher : Unknown
Page : 836 pages
File Size : 48,7 Mb
Release : 1955
Category : Waterfowl
ISBN : IND:30000113358687
Author : Anonim
Publisher : Unknown
Page : 316 pages
File Size : 50,9 Mb
Release : 1956
Category : Waterfowl
ISBN : UOM:39015077573106
Author : David Raymond Anderson
Publisher : Unknown
Page : 178 pages
File Size : 47,6 Mb
Release : 1972
Category : Bird populations
ISBN : UCR:31210024953661
Simple experiments and observations reveal the physical properties of light.
Author : United States Department of the Interior. U.S. Fish and Wildlife Service. Bureau of Sport Fisheries and Wildlife, author
Publisher : Unknown
Page : 180 pages
File Size : 53,6 Mb
Release : 1975
Category : Bird populations
ISBN : UOM:39015095241579
Author : Charles J. Henny,Douglas H. Johnson,Michael A. Bogan,Sandra L Husar,Alan B. Sargeant
Publisher : Unknown
Page : 582 pages
File Size : 45,7 Mb
Release : 1972
Category : Bird populations
ISBN : UIUC:30112005975872
Author : Anonim
Publisher : Unknown
Page : 296 pages
File Size : 53,9 Mb
Release : 1972
Category : Animal ecology
ISBN : OSU:32435003108867
Author : Anonim
Publisher : Unknown
Page : 804 pages
File Size : 40,6 Mb
Release : 1965
Category : Fishing
ISBN : IND:30000121270262
Author : Anonim
Publisher : Unknown
Page : 864 pages
File Size : 48,8 Mb
Release : 1971
Category : Fishing
ISBN : CHI:098468844
Author : Anonim
Publisher : Unknown
Page : 292 pages
File Size : 53,6 Mb
Release : 1972
Category : Wildlife conservation
ISBN : MINN:30000010624314
Author : Anonim
Publisher : Unknown
Page : 364 pages
File Size : 46,8 Mb
Release : 1957
Category : Natural resources
ISBN : UOM:39015055277977
Author : Anonim
Publisher : Unknown
Page : 864 pages
File Size : 45,6 Mb
Release : 1953
Category : Wildlife conservation
ISBN : STANFORD:36105014017896
Author : Anonim
Publisher : Unknown
Page : 318 pages
File Size : 40,9 Mb
Release : 1955
Category : Fishes
ISBN : OSU:32435055057939
Author : Aleksandr Nikolaevich Formozov,I︠U︡. A. Isakov
Publisher : Unknown
Page : 280 pages
File Size : 41,5 Mb
Release : 1969
Category : Animal populations
ISBN : MINN:31951D01790560E
Author : D. M. Ealey,Martin K. McNicholl,Provincial Museum of Alberta. Natural History Section
Publisher : Unknown
Page : 764 pages
File Size : 55,9 Mb
Release : 1991
Category : Science
ISBN : MINN:31951D00778653N
Bibliography lists 7444 references of unpublished and published reports, articles and books relating to the ornithology of Alberta, up to and including 1989. Includes all those listed in the first edition published as Provincial Museum of Alberta Natural History occasional paper no. 3 in 1981, with corrections, plus additional information as keywords. Indices for authors, subject, species and geographical location follow the main compilation.
Author : Paul Johnsgard
Publisher : Lulu.com
Page : 161 pages
File Size : 52,5 Mb
Release : 2016-08-23
Category : Science
ISBN : 9781609620943
The eight currently recognized species of North American geese are part of a familiar group of birds collectively called waterfowl, all of which are smaller than swans and generally larger than ducks. They include the most popular of our aquatic gamebirds, with several million shot each year by sport hunters. Our two most abundant waterfowl, the Canada goose and snow goose, have populations collectively totaling about 15 million individuals. Like swans, the lifelong pairbonding of geese, their familial care, and prolonged social attachment to their offspring are legendary. Their seasonal migratory flights sometimes span thousands of miles, and the sight of their long, wavering flight formations are as much the symbols of seasonal change as are the spring songs of cardinals or the appearance of autumnal leaf colors. This book describes each species' geographic range and subspecies, its identification traits, weights and measurements, and criteria for its age and sex determination. Ecological and behavioral information includes each species' breeding and wintering habitats, its foods and foraging behavior, its local and long distance movements, and its relationships with other species. Reproductive information includes each species' age of maturity, pair-bond pattern, pair-forming behaviors, usual clutch sizes and incubation periods, brooding behavior, and postbreeding behavior. Mortality sources and rates of egg, young, and adult losses are also summarized, and each species' past and current North American populations are estimated. In addition to a text of nearly 60,000 words, the book includes 8 maps, 21 line drawings, and 28 photographs by the author, as well as more than 700 literature citations.
