Molt in North American Birds PDF Download

Author: Steve N. G. Howell
Publisher: Houghton Mifflin Harcourt
ISBN: 0547152353
Category : Nature
Languages : en
Pages : 280

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Book Description
Citing the lesser-known role of molt in identifying and understanding birds, a detailed reference comprehensively illuminates four key strategies about the molt cycle to provide insights into North American bird history, habitat and migratory patterns.

Author: Steve N. G. Howell
Publisher: HarperCollins
ISBN: 054748769X
Category : Nature
Languages : en
Pages : 280

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Book Description
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.

Author: Erik I. Johnson
Publisher: CRC Press
ISBN: 1351646079
Category : Nature
Languages : en
Pages : 737

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Book Description
Molt is an important avian life history event in which feathers are shed and replaced. The timing, duration, seasonality, extent and pattern of molt follows certain strategies and this book reviews and describes these strategies for nearly 190 species based on information gathered from a 30-year study of Central Amazonian birds. Most species accounts are illustrated with several color photos focusing on wing and tail feather molt, molt limits, and how to use these patterns to accurately age birds. Published in collaboration with and on behalf of the American Ornithological Society, this volume in the highly-regarded Studies in Avian Biology series is a rich source of life history information for ornithologists working on tropical birds.

Author: Steve N. G. Howell
Publisher: Princeton University Press
ISBN: 0691117969
Category : Literary Criticism
Languages : en
Pages : 448

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Book Description
The first comprehensive illustrated guide to North America's vagrant birds Rare Birds of North America is the first comprehensive illustrated guide to the vagrant birds that occur throughout the United States and Canada. Featuring 275 stunning color plates, this book covers 262 species originating from three very different regions—the Old World, the New World tropics, and the world's oceans. It explains the causes of avian vagrancy and breaks down patterns of occurrence by region and season, enabling readers to see where, when, and why each species occurs in North America. Detailed species accounts describe key identification features, taxonomy, age, sex, distribution, and status. Rare Birds of North America provides unparalleled insights into vagrancy and avian migration, and will enrich the birding experience of anyone interested in finding and observing rare birds. Covers 262 species of vagrant birds found in the United States and Canada Features 275 stunning color plates that depict every species Explains patterns of occurrence by region and season Provides an invaluable overview of vagrancy patterns and migration Includes detailed species accounts and cutting-edge identification tips

Author: Ted Floyd
Publisher:
ISBN: 1426220030
Category : House & Home
Languages : en
Pages : 308

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Book Description
"In this elegant narrative, celebrated naturalist Ted Floyd guides you through a year of becoming a better birder. Choosing 200 top avian species to teach key lessons, Floyd introduces a new, holistic approach to bird watching and shows how to use the tools of the 21st century to appreciate the natural world we inhabit together whether city, country or suburbs." -- From book jacket.

Author: Lukas Jenni
Publisher: Bloomsbury Publishing
ISBN: 1472977238
Category : Nature
Languages : en
Pages : 473

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Book Description
The first comprehensive review of all aspects of the biology of moult, drawing information from across the literature and in all birds, from penguins to passerines. Feathers are amazing structures unique to birds and, for a variety of reasons, they need to be renewed periodically as a whole in a process called moult. During this process, all of the functions of plumage are impaired and most aspects of a bird's life are affected. Every moult determines a bird's appearance anew, and restores plumage efficacy for flight and insulation. Moult profoundly affects physiology and the organization of the annual cycle, and it constrains reproduction and migration. Given these major impacts, which are equal to the other annual challenges of reproduction and migration, it is surprising that research on moult has largely been so neglected a subject. Lukas Jenni and Raffael Winkler have brought together the widely scattered results of studies on the processes and consequences of moult in birds. This book opens with an overview of the functions of plumage, and of feather maintenance and feather wear, and then introduces the two functions of moult: replacement of worn feathers and adjustment of plumage characteristics and appearance. The body of the book then examines feather-growth and the physiology, energetics and control of moult, and how various other physiological processes interact with moult and may compensate for its costs. Significantly, the authors explain how variations in moult and feather quality affect a bird's overall plumage quality, and they highlight the resulting consequences in terms of physical performance, appearance and signalling. Finally, there is a review of all the various solutions that birds have developed to fit moult into the annual cycle. This long-awaited book covers for the first time all aspects of the biology of moult and fills an important gap in the literature, completing our understanding of how the most important annual events in a bird's life fit together into a coherent whole. It draws on a wide range of information – from penguins to small passerines, from raptors to wildfowl – to highlight the variety of the subject and to pinpoint the many gaps in our knowledge along with avenues for fruitful further research.

Author: Peter Pyle
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 746

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Book Description

Author: John Kricher
Publisher: Peterson Reference Guides
ISBN: 1328787362
Category : Birds
Languages : en
Pages : 363

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Book Description
A fascinating look at what birds do and why they do it Both casual and serious birdwatchers can take their skills to the next level with this detailed consideration of bird behavior. This book makes it possible to move beyond identifying birds to understanding some of the underpinning and meaning to what birds do, how they do it, and why they do it. Written in an easy-to-understand style, with an abundance of photos illustrating the behaviors, the book shows how flight, molt, migration, feeding, predation, social behavior, courtship, and nesting shape birds' behaviors. Birds are everywhere, and easy to observe; this introduction to elements of bird behavior will connect readers more intimately with these remarkable and beguilingly perceptive animals.

Author: Ted Floyd
Publisher: Harper Collins
ISBN: 0061120405
Category : Nature
Languages : en
Pages : 526

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Book Description
This new field guide provides a suite of modern tools to effectively aid in the identification of more than 750 species of birds across North America. It introduces a "whole bird" approach by concisely gathering a collection of information about birds into one portable and well-organized volume. 2,000 stunning color photographs of birds in natural habitats show the most important field marks, regional population differences, life stages, and behaviors 700-plus detailed and up-to-date color range maps show summer, migration, winter, year-round, and rare but regular occurrences of every major species A DVD of birdsongs for 138 major species (587 vocalizations in all for 5½ hours of play); each high-quality MP3 file is embedded with an image of the bird, perfect to view on home computers and portable MP3 players Concise descriptions of habits and ecology, age-related and seasonal differences, regional forms, vocalization, and informative captions pointing out the most important aspects of the bird 46 group essays with information outlining taxonomy, feeding, migration, habitats, behaviors, and conservation status A thorough and accessible introduction to birds and birding includes sections on parts of a bird, plumage and molt, food and feeding, migration, habitats, conservation, tips on bow to become a better birder, and more A detailed glossary of terms, species checklist, and quick index The new Smithsonian Field Guide to the Birds of North America is perfectly designed to give birders the most powerful and user-friendly collection of information to carry into the field or wherever they enjoy learning about birds and nature.

Author: Laura Erickson
Publisher: National Geographic Books
ISBN: 1426210442
Category : Nature
Languages : en
Pages : 196

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Book Description
Presents information about 160 North American bird species, including facts about physical features, voice, habitat, food, and a map indicating the regions in which each species can be found.