Download or read book Food Habits of North American Diving Ducks written by Clarence Cottam and published by Washington : United States. Department of Agriculture. This book was released on 1939 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Food Habits of North American Diving Ducks written by Clarence Cottam and published by . This book was released on 1936 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Food Habits of North American Diving Birds written by Clarence Cottam and published by . This book was released on 1939 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The North American Whistling Ducks Pochards and Stifftails written by Paul Johnsgard and published by Lulu.com. This book was released on 2017-03-24 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Conservation of Marine Birds of Northern North America written by James C. Bartonek and published by . This book was released on 1979 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attempts to identify problems and needed information and programs necessary for conservation of marine birds of northern North America.

Download or read book Conservation of marine birds of northern North America written by Various and published by Good Press. This book was released on 2023-10-20 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation of Marine Birds of Northern North America is a comprehensive and eloquently written book that delves into the importance of protecting the diverse species of seabirds found in the northern region of the continent. The book not only discusses the ecological significance of these birds but also provides detailed strategies for conservation efforts, making it a valuable resource for environmentalists, researchers, and policymakers. Written in a scholarly yet accessible style, the book combines scientific data with compelling narratives to emphasize the urgency of preserving these avian populations in the face of numerous threats such as habitat destruction and climate change. The authors showcase a deep understanding of marine bird biology and behavior, offering insights into their conservation that are both informative and thought-provoking. Various's expertise in ornithology and conservation shines through in this meticulously researched and thoughtfully presented work, making it a must-read for anyone passionate about protecting our marine ecosystems and the wildlife that inhabit them. Conservation of Marine Birds of Northern North America serves as a poignant reminder of the delicate balance of nature and the importance of our role in preserving it for future generations.

Download or read book Food Habits of the American Coot written by John Courts Jones and published by . This book was released on 1940 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitat Management for Migrating and Wintering Waterfowl in North America written by Loren M. Smith and published by Texas Tech University Press. This book was released on 1989 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important compilation on habitat management for waterfowl throughout North America addresses practicing waterfowl biologists and managers, researchers, and students of waterfowl ecology and management.

Download or read book Technical Bulletin written by and published by . This book was released on 1940 with total page 1714 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experiment Station Record written by United States. Office of Experiment Stations and published by . This book was released on 1939 with total page 2162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experiment Station Record written by U.S. Office of Experiment Stations and published by . This book was released on 1940 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitat Requirements for Chesapeake Bay Living Resources written by and published by . This book was released on 1991 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Food Habits of a Group of Shore Birds written by Charles Carlisle Sperry and published by . This book was released on 1940 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annotated Bibliography of Literature on Alaska Water Birds written by Colleen M. Handel and published by . This book was released on 1981 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Annotated Bibliography of Literature on Alaska Water Birds written by and published by . This book was released on 1981 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stumpage Prices of Privately Owned Timber in the United States written by Henry Bake Steer and published by . This book was released on 1938 with total page 1704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Living Resources of the Delaware Estuary written by and published by . This book was released on 1995 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: