Ruddy Ducks And Other Stifftails
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Ruddy Ducks And Other Stifftails
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Author : Paul A. Johnsgard
language : en
Publisher:
Release Date : 2010
Ruddy Ducks And Other Stifftails written by Paul A. Johnsgard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Anatidae categories.
An in-depth biological overview of a fascinating group of waterfowl 'Paul A. Johnsgard's first glimpse of a North American ruddy duck--a chestnut-brown bird with a blue bill, black head, and white cheeks--led to decades of observing the eight extant species of stiff-tailed ducks. In Ruddy Ducks and Other Stifftails, he and Montserrat Carbonell introduce general readers and ornithologists to the ruddy's morphology, behavior, ecology, and diverse relatives. This richly illustrated volume highlights these unique species at a critical time, when their wetlands habitats are increasingly at risk.
The North American Whistling Ducks Pochards And Stifftails
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Author : Paul Johnsgard
language : en
Publisher: Lulu.com
Release Date : 2017-03-24
The North American Whistling Ducks Pochards And Stifftails written by Paul Johnsgard and has been published by Lulu.com this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-24 with Science categories.
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.
Ducks Geese And Swans
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Author : Janet Kear
language : en
Publisher:
Release Date : 2005
Ducks Geese And Swans written by Janet Kear and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Anseriformes categories.
"Wildfowl and screamers belong to a highly diverse family of birds, confined to watery habitats. They are amongst the most attractive of birds and are very well-known to man, who has domesticated them, used their feathers for warm clothing and ornamentation, admired their flight, courtship and migration, caught them for food, maintained them in captivity for pleasure, and written about their doings in delightful children's stories, from Mother Goose to Jemima Puddleduck and Donald Duck. They occur throughout the world except Antarctica. Some are faithful to the same partner for life, others for only the few minutes of copulation. In some species, male and female make devoted parents, and yet there is one within the group whose female lays her eggs in the nests of others and never incubates. Diving as a method of obtaining food has evolved many times within the family. Most nest in the open but others in the tree-hole nests of woodpeckers and some in the ground burrows of rabbits or aardvarks. They may be highly social or solitary, defending a large territory." -- publisher website.
Wildfowl
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Author : Steve Madge
language : en
Publisher: A&C Black
Release Date : 2010-09-30
Wildfowl written by Steve Madge and has been published by A&C Black this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-09-30 with Science categories.
A summary of information on 154 species of duck, geese and swans of the world intended as an identification manual for the wildfowl enthusiast that goes beyond a regional basis and is light enough to be used as a handy reference book in the field. The text not only clarifies identification techniques but fully discusses problematic plumages in detail as well as providing a summary on world distribution and status complemented by clear distribution maps.
Discrete Mathematics With Ducks
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Author : Sarah-marie Belcastro
language : en
Publisher: CRC Press
Release Date : 2018-11-15
Discrete Mathematics With Ducks written by Sarah-marie Belcastro and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-15 with Mathematics categories.
Discrete Mathematics with Ducks, Second Edition is a gentle introduction for students who find the proofs and abstractions of mathematics challenging. At the same time, it provides stimulating material that instructors can use for more advanced students. The first edition was widely well received, with its whimsical writing style and numerous exercises and materials that engaged students at all levels. The new, expanded edition continues to facilitate effective and active learning. It is designed to help students learn about discrete mathematics through problem-based activities. These are created to inspire students to understand mathematics by actively practicing and doing, which helps students better retain what they’ve learned. As such, each chapter contains a mixture of discovery-based activities, projects, expository text, in-class exercises, and homework problems. The author’s lively and friendly writing style is appealing to both instructors and students alike and encourages readers to learn. The book’s light-hearted approach to the subject is a guiding principle and helps students learn mathematical abstraction. Features: The book’s Try This! sections encourage students to construct components of discussed concepts, theorems, and proofs Provided sets of discovery problems and illustrative examples reinforce learning Bonus sections can be used by instructors as part of their regular curriculum, for projects, or for further study
Globally Threatened Birds In Europe
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Author : Borja Heredia
language : en
Publisher: Council of Europe
Release Date : 1996-01-01
Globally Threatened Birds In Europe written by Borja Heredia and has been published by Council of Europe this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-01-01 with Political Science categories.
Of some 10000 bird species in the world, 514 are to be found in Europe. Of these, twenty-six European species are globally threatened & risk extinction if their populations are not actively built up. This series of action plans for Europe's most threatened species is the result of a joint project carried out by BirdLife International, in collaboration with Wetlands International, involving over 370 experts in almost every European country. This book will be of interest to conservationists at both national & local level, educators & all those interested in the conservation of Europe's bird heritage.
The Birds Of Nebraska
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Author : Paul Johnsgard
language : en
Publisher: Lulu.com
Release Date : 2018-07-06
The Birds Of Nebraska written by Paul Johnsgard and has been published by Lulu.com this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-06 with Travel categories.
This annotated list of the birds of Nebraska grew gradually out of research associated with my writing of the Birds of the Great Plains: Breeding Species and Their Distribution (Johnsgard, 1979a). It expands and updates an earlier version that was published in 2013 by the University of Nebraska–Lincoln Libraries DigitalCommons’ Zea Books (Johnsgard, 2013a). It has been updated and modified in its current revision to conform with the most recent (2017) major revision of the American Ornithologists’ Society’s Checklist of North American Birds (Chesser et al., 2017). It has also been modified in its current revision to conform very closely to the most recent “Official List of the Birds of Nebraska” by the Nebraska Ornithologists’ Union (Gubanyi, 1997, and later supplements in the Nebraska Bird Review, to 84:138–150). The NOU’s official state list of birds (461 species as of 2017) is based on actual specimen evidence or some other convincing basis of each species’ proven occurrence in the state. That list includes 337 “regular” species, 29 “casual” species, 90 “accidental” species, and 5 extinct or extirpated species. In this edition I have classified 368 of the 461 species of Nebraska birds as ranging in relative frequency of occurrence as “abundant” to “rare.” There are also 61 species considered to be of “accidental” occurrence, having been reliably reported in Nebraska no more than five times, 20 that are considered “extremely rare” or “very rare,” if reported from six to 25 times. There are also three extinct, four extirpated, and five unsuccessfully introduced species. Thirteen hypothetical species of dubious origin or identification are mentioned parenthetically. The text includes more than 123,000 words, nearly 200 literature references, and 19 pages of drawings and maps.
Ducks Geese And Swans Species Accounts Cairina To Mergus
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Author : Janet Kear
language : en
Publisher:
Release Date : 2005
Ducks Geese And Swans Species Accounts Cairina To Mergus written by Janet Kear and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Nature categories.
Ducks Geese And Swans Of North America
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Author : Guy Baldassarre
language : en
Publisher: JHU Press
Release Date : 2014-11-15
Ducks Geese And Swans Of North America written by Guy Baldassarre and has been published by JHU Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-15 with Science categories.
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.
Wyoming Wildlife A Natural History
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Author : Paul Johnsgard
language : en
Publisher: Lulu.com
Release Date : 2019-06-30
Wyoming Wildlife A Natural History written by Paul Johnsgard and has been published by Lulu.com this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-30 with Travel categories.
This book surveys Wyoming's mammal, bird, reptile, and amphibian faunas. In addition to introducing the state's geography, geology, climate, and major ecosystems, it provides 65 biological profiles of 72 mammal species, 195 profiles of 196 birds, 9 profiles of 12 reptiles, and 6 profiles of 9 amphibians. There are also species lists of Wyoming's 117 mammals, 445 birds, 22 reptiles, and 12 amphibians. Also included are descriptions of nearly 50 national and state properties, including parks, forests, preserves, and other public-access natural areas in Wyoming. The book includes a text of more than 150,000 words, nearly 700 references, a glossary of 115 biological terms, nearly 50 maps and line drawings by the author, and 33 color photographs by Thomas D. Mangelsen.