Aspects of the Breeding Biology of Ring-necked Ducks (Aythya Collaris) PDF Download
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Author: William Leo Hohman
Publisher:
ISBN:
Category : Ducks
Languages : en
Pages : 280
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Book Description
Author: William Leo Hohman
Publisher:
ISBN:
Category : Ducks
Languages : en
Pages : 280
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Book Description
Author:
Publisher: U of Minnesota Press
ISBN: 9781452900162
Category : Electronic books
Languages : en
Pages : 812
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Book Description
Author: Paul Johnsgard
Publisher: Lulu.com
ISBN: 1609621107
Category : Nature
Languages : en
Pages : 186
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Book Description
Although the 12 species representing three waterfowl tribes described in this volume are not closely related, they fortuitously provide an instructive example of adaptive evolutionary radiation within the much larger waterfowl lineage (the family Anatidae), especially as to their divergent morphologies, life histories, and social behaviors. The whistling-ducks (Dendrocygna), with three known North American species, are notable for their permanent pair-bonds, extended biparental family care, and strong social cohesion. In contrast, males of the five typical pochards of North American diving ducks (Aythya) establish monogamous pair-bonds that are maintained only long enough to assure that the female's eggs are fertilized. The endpoint of this behavioral gradient, promiscuity or polygyny, exists among at least some of the typical stifftails (Oxyura). Such diverse reproductive strategies have exerted powerful evolutionary influences on interspecies variations in sexual dimorphism, sexual behavior, anatomy, ecology, and other traits. This volume includes more than 63,000 words, plus some 200 maps, photos, drawings, and sketches, and nearly 650 literature citations. It is the last of five volumes that describe all 55 waterfowl species that have been historically documented in North America; collectively, the volumes total over 300,000 words, with nearly 3,000 literature citations, and more than 600 maps, photos, drawings, and sketches.
Author: Guy Baldassarre
Publisher: JHU Press
ISBN: 1421408082
Category : Science
Languages : en
Pages : 1183
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Book Description
The best-selling and authoritative reference book on waterfowl has been fully revised and updated by one of the world’s most respected waterfowl biologists. Honorable Mention for the PROSE Award for Excellence, Multivolume/Science of the Association of American Publishers Ducks, Geese, and Swans of North America has been hailed as a classic since the first edition was published in 1942. A must-have for professional biologists, birders, waterfowl hunters, decoy collectors, and wildlife managers, this fully revised and updated edition provides definitive information on the continent's forty-six species. Maps of both winter and breeding ranges are presented with stunning images by top waterfowl photographers and the acclaimed original artwork of Robert W. (Bob) Hines. Originally authored by F. H. Kortright and later revised by Frank Bellrose, this latest edition, which has been meticulously updated by renowned waterfowl biologist Guy Baldassarre, continues the legacy of esteemed authors. Each species account contains in-depth sections on: • identification • distribution • migration behavior • habitat • population status • breeding biology • rearing of young • recruitment and survival • food habits and feeding ecology • molts and plumages • conservation and management To facilitate identification, the species accounts also include detailed illustrations of wings. An appendix contains comparative illustrations of ducklings, goslings, and cygnets. This edition of Ducks, Geese, and Swans consists of two volumes, printed in full color, and packaged in a slipcase, along with a CD containing references and additional maps.
Author: Janet Kear
Publisher:
ISBN: 9780198610090
Category : Nature
Languages : en
Pages : 484
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Author:
Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 920
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Author: Wildfowl Trust
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 232
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Book Description
Author: Robert F. Andrle
Publisher: Cornell University Press
ISBN: 0801416914
Category : Birds
Languages : en
Pages : 574
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Book Description
This generously illustrated, easy-to-use reference gives instant information on 238 birds that are native to New York State. The core of the atlas is a series of accounts of each species, each account including a distribution map with possible, probable, or confirmed breeding. Facing each map is an explanatory page of text that covers a number of topics: abundance, historical and current distirbution, habitat, and nest description and location. On the same page is an illustration of the bird, often with its nest and young.
Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 826
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Book Description
Author:
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 356
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Book Description
