Author:
Publisher: Museum Tusculanum Press
ISBN: 9788763512251
Category :
Languages : en
Pages : 68

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Author: Jon Lloyd Dunn
Publisher: National Geographic Books
ISBN: 9780792253143
Category : Nature
Languages : en
Pages : 512

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Book Description
Describes and presents color illustrations and range maps for 967 North American bird species, covering their physical characteristics, behavior, habitats, and vocalizations.

Author: Erik W. Born
Publisher: Museum Tusculanum Press
ISBN: 9788763512275
Category : Walrus
Languages : en
Pages : 40

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Author:
Publisher: Museum Tusculanum Press
ISBN: 9788763512299
Category :
Languages : en
Pages : 32

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Author:
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 580

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Author: Rick Wright (Bird tour leader)
Publisher: Mariner Books
ISBN: 0547973160
Category : History
Languages : en
Pages : 453

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Book Description
Sparrows are as complicated as they are common. This is an essential guide to identifying 76 kinds, along with a fascinating history of human interactions with them. What, exactly, is a sparrow? All birders (and many non-birders) have essentially the same mental image of a pelican, a duck, or a flamingo, and a guide dedicated to waxwings or kingfishers would need nothing more than a sketch and a single sentence to satisfactorily identify its subject. Sparrows are harder to pin down. This book covers one family (Passerellidae), which includes towhees and juncos, and 76 members of the sparrow clan. Birds have a human history, too, beginning with their significance to native cultures and continuing through their discovery by science, their taxonomic fortunes and misfortunes, and their prospects for survival in a world with ever less space for wild creatures. This book includes not just facts and measurements, but stories--of how birds got their names and how they were discovered--of their entanglement with human history.

Author: Sten Asbirk
Publisher: Nordic Council of Ministers
ISBN: 9789289301305
Category : Nature
Languages : en
Pages : 94

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Book Description
Fullst.tit.: Population sizes and trends of birds in the Nordic countries 1978-1994. 88 s., hf., 1997. Engelsk tekst. (TemaNord 1997 ; 614)

Author: David Thomas Drumm
Publisher:
ISBN:
Category : Marine animals
Languages : en
Pages : 308

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Book Description
A current and comprehensive species list of marine invertebrates of Alaska is essential for effective management of living marine resources, sustainable fisheries, conservation of vulnerable ecosystems, and advancement of our knowledge of biodiversity and ecosystem function. Furthermore, the most current checklist available to resource managers and scientists is quite dated and limited in that it only includes the marine invertebrates of the southern coast of Alaska to California. Since that checklist was published, many new species have been described, many range extensions have been discovered, and considerable changes in higher-level systematics have been made. The checklist that we have compiled lists 3708 species and presents for each species the currently accepted scientific name and its significant synonyms, common names, type localities, geographic and depth distributions, a general statement of abundance in Alaska when known (e.g., rare, uncommon, common, abundant), and general remarks. It includes species recorded in the marine waters of Alaska from the intertidal zone, continental shelf, and upper continental slope to abyssal depths, from the Beaufort Sea at the Arctic border with Yukon, Canada; the eastern Chukchi Sea, the eastern Bering Sea, the Aleutian Islands to the western border with Russia; and the Gulf of Alaska to Dixon Entrance at the southern border with British Columbia. Sound and reliable taxonomic identifications are necessary to monitor and predict changes in the distribution and abundance of marine species. The current status and future direction of the study of Alaskan marine invertebrate biodiversity are briefly discussed.

Author: Paul Johnsgard
Publisher: Lulu.com
ISBN: 1609621069
Category : Nature
Languages : en
Pages : 258

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Book Description
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.

Author: National Geographic
Publisher: National Geographic Books
ISBN: 9781426200052
Category : Nature
Languages : en
Pages : 508

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Book Description
This durable journal is a must for birders of all skill levels, from novices just beginning to build a life list to veterans looking for the most up-to-date, systematic, and visually complete way to document sightings of even the rarest, most elusive birds. Based on the latest classifications by the American Ornithologists' Union and organized by family, its comprehensive, easy-to-use checklist itemizes every species recorded in North America, including accidental visitors--more than 960 in all, each identified both by common and Latin names and illustrated with specially commissioned paintings by the finest bird artists at work today. The Birder's Journal features a user-friendly page layout that directly mirrors the National Geographic Field Guide to the Birds of North America for quick access to information. It provides a consistent, familiar format for recording the place, date, and time a bird was spotted, along with additional space for notes and comments, sketches, and other important details. And with each new entry, it becomes ever more valuable and personal--both as a chronicle of birding accomplishments and as a memento of the observations and occasions that make birding so deeply satisfying. A first-rate journal is an essential addition to any birder's bookshelf, and this is the best available anywhere. It's also a perfect gift, especially when paired with the latest edition of the National Geographic Field Guide to the Birds of North America.