identification guide to north american birds part ii anatidae to alcidae

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Identification Guide To North American Birds Anatidae To Alcidae

Author : Peter Pyle
ISBN : 0961894040
Genre : Birds
File Size : 84. 70 MB
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Identification Guide To North American Birds

Author : Peter Pyle
ISBN : OCLC:613095742
Genre :
File Size : 36. 78 MB
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Peterson Reference Guide To Molt In North American Birds

Author : Steve N.G. Howell
ISBN : 9780547487694
Genre : Nature
File Size : 21. 39 MB
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To most observers, molt seems an overwhelming subject. But birders use many aspects of molt more than they realize—to distinguish juvenile birds from adults, to pick out an individual hummingbird from among dozens visiting a feeder, and much more. And for those whose interest goes beyond simply identifying birds, questions such as What triggers molt to start? How fast do feathers grow? and How long do they last? offer a fascinating window into the lives of birds. Put plainly, molt relates in some way to everything a bird does, including where it lives, what it eats, and how far it migrates. Here, for the first time, molt is presented for the nonscientist. Molt is very orderly and built on only four underlying strategies: simple basic, complex basic, simple alternate, and complex alternate. This book clearly lays out these strategies, relates them to aspects of life history, such as habitat and migration, and makes this important subject accessible.

Birds Of The Pacific Northwest

Author : John Shewey
ISBN : 9781604697858
Genre : Nature
File Size : 25. 37 MB
Format : PDF
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The Newest Addition to the Timber Press Field Guide Series Birds of the Pacific Northwest describes and illustrates more than 400 bird species commonly encountered in Oregon, Washington, Idaho, and British Columbia. This comprehensive, full-color guide is organized to follow the order in which groups and species are presented by the American Union. Range maps for each species provide valuable information for identification.

The Teal

Author : Matthieu Guillemain
ISBN : 9781472908513
Genre : Nature
File Size : 45. 67 MB
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Small, noisy and colourful, the Teal is a familiar duck throughout the wetlands and waterways Europe and Asia. Once hunted extensively for the pot, its numbers have recovered and it is now one of our commonest species of waterfowl. A flagship species for wetland conservation, the Teal is also an excellent model species for ecological research, and this forms the spine of this new Poyser monograph. The Teal looks at distribution and trends in numbers, foraging ecology, breeding behaviour), population dynamics, management and conservation of teal, looking at both the Eurasian Common Teal and its North American equivalent, the Green-winged Teal (which until relatively recently was considered to be the same species). The book provides a scientifically robust account on which wetland managers, research scientists and the ornithological community may rely, with wider implicatons for the conservation and management of other waterfowl, and for ecological research in general.

Identification Guide To North American Passerines

Author : Peter Pyle
ISBN : 0961894008
Genre : Science
File Size : 73. 97 MB
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Bird Trapping And Bird Banding

Author : Hans Bub
ISBN : UOM:39076001908974
Genre : Nature
File Size : 65. 42 MB
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