Download or read book A Study of the Old squaw Duck on Lake Michigan written by Robert Ellarson and published by . This book was released on 1956 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The North American Sea Ducks written by Paul Johnsgard and published by Lulu.com. This book was released on 2016-11-09 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 21 species of sea ducks are one of the larger subgroups (Tribe Mergini) of the waterfowl family Anatidae, and the 16 species (one historically extinct) that are native to North America represent the largest number to be found on any continent, and also the largest number of endemic sea duck species native to any continent. Although generally not important as game birds, the sea ducks include some economically important birds such as the eiders, the basis for the Arctic eiderdown industry and a historically important food source for some Native American cultures. They also include what is probably the most northerly breeding species of all waterfowl and an icon of Arctic bird life, the long-tailed duck. The sea ducks also include species having some of the most complex and diverse pair-forming postural and acoustic displays of all waterfowl (goldeneyes and bufflehead), and some of the deepest diving species of all waterfowl (scoters and long-tailed duck). Sea ducks are highly prone to population disasters caused by oil spills and other water contaminants and, like other seabirds, are among the first bird groups that are being affected by current global warming trends in polar regions. This book is an effort to summarize succinctly our current knowledge of sea duck biology and to provide a convenient survey of the vast technical literature on the group, with over 900 literature references. It also includes 90,000 words of text (more than 40 percent of which is new), 15 updated range maps, 11 black & white and 20 color photographs, over 30 ink drawings, and nearly 150 sketches. Lastly, the North American sea ducks include the now extinct Labrador duck, the only northern hemisphere waterfowl species to have gone extinct in modern times. I have gratefully reprinted a Labrador duck watercolor by Sir Peter Scott. Considering recent population crashes in other sea ducks, such as the Steller's eider and spectacled eider, it should also offer a sobering reminder of the fragility of our natural world and its inhabitants, including us.
Download or read book Fish and Wildlife as Related to Water Quality of the Lake Michigan Basin written by United States. Bureau of Sport Fisheries and Wildlife and published by . This book was released on 1966 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Abstracts written by U.S. Fish and Wildlife Service and published by . This book was released on 1976 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Review written by and published by . This book was released on 1946 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ducks Geese and Swans of North America written by Guy Baldassarre and published by JHU Press. This book was released on 2014-11-15 with total page 1183 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Pesticides Monitoring Journal written by and published by . This book was released on 1975 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Conservation of North American Sea Ducks written by Jean-Pierre L. Savard and published by CRC Press. This book was released on 2015-04-13 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past decade has seen a huge increase in the interest and attention directed toward sea ducks, the Mergini tribe. This has been inspired, in large part, by the conservation concerns associated with numerical declines in several sea duck species and populations, as well as a growing appreciation for their interesting ecological attributes. Reflec
Download or read book Marine Birds of the Southeastern United States and Gulf of Mexico Anseriformes written by and published by . This book was released on 1982 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Waterfowl Ecology on Small Impoundments in Southeastern Alberta written by Lloyd B. Keith and published by . This book was released on 1959 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The object of this paper is to present information on waterfowl ecology and populations, derived from studies conducted over five breeding seasons on a group of small impoundments in southeastern Alberta. The parklands and mixed-prairie grasslands of the three Prairie Provinces extend almost 800 mi. east and west, and up to 400 mi. north and south. This region is the acknowledged duck factory of North America. The parklands, an ecotone between grassland and boreal forests, comprise about 85,000 sq. mi. The many natural lakes and potholes here are seldom dry. On the other hand, grassland areas totalling approximately 100,000 sq. mi. contain numerous drought-susceptible water areas. These shallow ponds may vanish midway through the breeding season in years of low rainfall and/or poor runoff, and during such times tens of thousands of young waterfowl undoubted perish. Two organizations are actively engaged in construction of permanent impoundments on the mixed prairie. The Dominion Gover.
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 Selected Water Resources Abstracts written by and published by . This book was released on 1970 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Estuary Study Appendix E Some economic factors affecting the estuary zone including market outlooks for estuary products Appendix F Technological impacts on estuary resource use Appendix G Conflicts and problems in specific estuaries written by United States. Bureau of Sport Fisheries and Wildlife and published by . This book was released on 1970 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Birds of Ontario Habitat Requirements Limiting Factors and Status written by Al Sandilands and published by UBC Press. This book was released on 2011-01-01 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vast literature on the history of birds is continually growing, but rarely has this information been compiled so that it is readily available in one reference work. Birds of Ontario is such a work, providing a comprehensive summary of the life history requirements of bird species in the province.
Download or read book Rational Readings on Environmental Concerns written by Jay H. Lehr and published by John Wiley & Sons. This book was released on 1992-08-04 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: "...the 'proof' of man's destruction of the environment isconsistently flawed.... the scientific method is being abused andignored. The errors are not random, however, but are systematicallybiased toward attempting to prove the guilt of man in the allegeddestruction of the planet. Objective science is disappearing and isbeing replaced by the pursuit of a philosophical agenda." --Richard F. Sanford in Environmentalism and theAssault on Reason Chapter 1 "The public has numerous misconceptions about the relationshipbetween environmental pollution and human cancer. Underlying thesemisconceptions is an erroneous belief that nature is benign." --Bruce N. Ames, Ph.D. and Lois Swirsky Gold, Ph.D inEnvironmental Pollution and Cancer: Some Misconceptions Chapter7 "Greenhouse gases have been increasing in the atmosphere,largely as a result of human activities. However, the climaterecord does not show the temperature increase and other telltalesigns of the expected greenhouse effect. The mathematical modelsused for predicting such effects are evidently not complete enoughto encompass all of the relevant physical processes in theatmosphere, thus throwing grave doubt on the drastic warminghypothesized for the next century." --S. Fred Singer in Global Climate Change: Facts andFiction Chapter 13 "...There is now no prima-facie case for any expensive policy ofsafeguarding species without more extensive analysis than has sofar been done." --Julian L. Simon in Disappearing Species,Deforestation and Data Chapter 26
Download or read book Ducks Geese and Swans of the World written by Paul A. Johnsgard and published by . This book was released on 1978 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary purpose of this book is to provide information on each of the species of the waterfowl family in a standardized format and easily accessible manner.
