Raptors Of Western North America
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Raptors Of Western North America
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Author : Brian K. Wheeler
language : en
Publisher: Princeton, N.J. : Princeton University Press
Release Date : 2003
Raptors Of Western North America written by Brian K. Wheeler and has been published by Princeton, N.J. : Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Nature categories.
"Raptors of Western North America"--together with its companion volume, "Raptors of Eastern North America"--are the best and most thorough guides to North American hawks, eagles, and other raptors ever published. Abundantly illustrated with hundreds of full-color high-quality photographs, they are essential books for anyone seeking to identify these notoriously tricky-to-identify birds. "The Wheeler Guides" will help birders and biologists navigate the pitfalls of raptor identification, including raptors' often extreme variation by age and sex as well as the existence of numerous "confusion" species. The plumage section discusses more plumage variations--and in greater consistency, depth, and clarity--than any previously published guide. The text--informed by years of study and consultation with local, state, provincial, and regional experts--covers all aspects of raptor biology in an easy-to-read and consistent format. It provides the most up-to-date information available on status and distribution, taking into account the recent alteration of some species' ranges due to pesticide bans and introduction programs. The range maps--which include "city" plotting--are the most accurate and largest ever produced for North American raptors.
Raptors Of Eastern North America
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Author :
language : en
Publisher:
Release Date : 2007-07
Raptors Of Eastern North America written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-07 with Birds of prey categories.
'Raptors of Eastern North America' is the best and most thorough guide to North American hawks, eagles, and other raptors ever published. Abundantly illustrated with hundreds of full-colour high-quality photos, it is an essential book for anyone seeking to identify these notoriously tricky-to-identify birds.
Raptors Western North America
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Author : Quick Reference Publishing
language : en
Publisher:
Release Date : 2012-10
Raptors Western North America written by Quick Reference Publishing and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10 with categories.
Raptors of Western North America contains over 120 color photos of all the raptors that occur west of the Rocky mountains in the continental United States and Canadian provinces. Multiple photos for many species show a variety of plumage conditions for males, females and different color morphs, upperside and underside flight views, as well as a number of different wing shapes for each species in flight. Perched birds are also shown. Each species featured includes a short description of the physical features, its size, and preferred habitats. The status"€"seasonal frequency, resident or migrant, geographic breeding habitats"€"of each raptor within the range is also noted. These guides differ from other similar products by the increased number of photos for each species, such as ten photos for Red-tailed Hawk complex and seven for Swainson's Hawk. This laminated, waterproof, folding field guide is a must for anyone who wants to identify birds of prey anywhere in western North America"€"and t
Birds Of Prey Of The West
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Author : Brian K. Wheeler
language : en
Publisher: Princeton University Press
Release Date : 2018-06-19
Birds Of Prey Of The West written by Brian K. Wheeler and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-19 with Nature categories.
Birds of Prey of the West and its companion volume, Birds of Prey of the East, are the most comprehensive and authoritative field guides to North American birds of prey ever published. Written and lavishly illustrated with stunning, lifelike paintings by leading field-guide illustrator, photographer, and author Brian Wheeler, the guides depict an enormous range of variations of age, sex, color, and plumage, and feature a significant amount of plumage data that has never been published before. The painted figures illustrate plumage and species comparisons in a classic field-guide layout. Each species is shown in the same posture and from the same viewpoint, which further assists comparisons. Facing-page text includes quick-reference identification points and brief natural history accounts that incorporate the latest information. The range maps are exceptionally accurate and much larger than those in other guides. They plot the most up-to-date distribution information for each species and include the location of cities for more accurate reference. Finally, the guides feature color habitat photographs next to the maps. The result sets a new standard for guides to North America's birds of prey. Lavishly illustrated with stunning, lifelike paintings Written and illustrated by a leading authority on North American birds of prey Depicts more plumages than any other guide Concise facing-page text includes quick-reference identification points Classic field-guide layout makes comparing species easy Large, accurate range maps include up-to-date distribution information Unique color habitat photographs next to the maps
Birds Of Prey Of The East
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Author : Brian K. Wheeler
language : en
Publisher: Princeton University Press
Release Date : 2018-06-19
Birds Of Prey Of The East written by Brian K. Wheeler and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-19 with Nature categories.
Birds of Prey of the East and its companion volume, Birds of Prey of the West, are the most comprehensive and authoritative field guides to North American birds of prey ever published. Written and lavishly illustrated with stunning, lifelike paintings by leading field-guide illustrator, photographer, and author Brian Wheeler, the guides depict an enormous range of variations of age, sex, color, and plumage, and feature a significant amount of plumage data that has never been published before. The painted figures illustrate plumage and species comparisons in a classic field-guide layout. Each species is shown in the same posture and from the same viewpoint, which further assists comparisons. Facing-page text includes quick-reference identification points and brief natural history accounts that incorporate the latest information. The range maps are exceptionally accurate and much larger than those in other guides. They plot the most up-to-date distribution information for each species and include the location of cities for more accurate reference. Finally, the guides feature color habitat photographs next to the maps. The result sets a new standard for guides to North America's birds of prey. Lavishly illustrated with stunning, lifelike paintings Written and illustrated by a leading authority on North American birds of prey Depicts more plumages than any other guide Concise facing-page text includes quick-reference identification points Classic field-guide layout makes comparing species easy Large, accurate range maps include up-to-date distribution information Unique color habitat photographs next to the maps
Raptors Of North America
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Author : Noel F. R. Snyder
language : en
Publisher: Voyageur Press (MN)
Release Date : 2006-01-01
Raptors Of North America written by Noel F. R. Snyder and has been published by Voyageur Press (MN) this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-01 with Birds categories.
Photographs and text profile fifty-three raptor species found in North America, with information on their natural history, habitat, behavior, physical characteristics, and conservation.
Falcons Of North America
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Author : Kate Davis
language : en
Publisher:
Release Date : 2008
Falcons Of North America written by Kate Davis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Nature categories.
Fierce, bold, and beautiful, falcons hold a special place in the hearts of people. In Falcons of North America, renowned raptor advocate and environmental educator Kate Davis opens a door into the lives of these extra-ordinary, enigmatic birds of prey."--Back cover.
Raptors Eastern North America
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Author : Quick Reference Publishing
language : en
Publisher:
Release Date : 2012-10
Raptors Eastern North America written by Quick Reference Publishing and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10 with categories.
Investigating Spatial And Temporal Mercury Trends Of Terrestrial Feeding North American Raptors Using Feathers
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Author : Ryan P. Bourbour
language : en
Publisher:
Release Date : 2018
Investigating Spatial And Temporal Mercury Trends Of Terrestrial Feeding North American Raptors Using Feathers written by Ryan P. Bourbour and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Mercury (Hg) contamination in the environment is ubiquitous across the globe and is mainly the result of anthropogenic activities. Hg pollution can move vast distances via atmosphere and waterways and can persist in the environment causing prolonged exposure to organisms far from the pollution source. Once released into the environment, elemental Hg becomes biologically available and enters various food webs where biological functions can be impacted; even low levels of Hg exposure have been shown to negatively affect behavior, reproductive success, development, and survival, especially in avian species. Birds of prey, or raptors, occupy a variety of ecosystems and are increasingly being valued as sentinels for biomonitoring contaminants, such as Hg, over large geographic regions. However, little is currently known about 1) how Hg exposure differs among diurnal raptor species in western North America, 2) how Hg exposure fluctuates in raptor populations over time, and 3) how Hg levels vary for a single raptor species across the continent. To address these questions, we analyzed total mercury (THg) concentrations ([mu]g/g dry weight) in breast feathers collected by raptor migration monitoring sites across North America, where collecting feather samples is often standard procedure. 1) To assess differences in Hg exposure among raptor species in western North America, we analyzed THg concentrations in breast feathers collected from 10 raptor species in the Pacific Flyway. We ran statistical analyses for 9 species and found species, guild (bird specialist or non-bird specialist), and age (juvenile or adult) influenced feather THg concentrations whereas sex (male or female) did not. Feather THg concentrations averaged (Least-squared mean ± standard error [mu]g/g dry weight (dw)) higher for raptors that specialize on avian prey (Bird specialists; Sharp-shinned Hawk Accipiter striatus: n=113; 4.35 ± 0.45 [mu]g/g dw, Peregrine Falcon Falco peregrinus: n=12; 3.93 ± 1.11 [mu]g/g dw, Cooper's Hawk Accipiter cooperii: n=20; 2.35 ± 0.50 [mu]g/g dw, and Merlin Falco columbarius: n=59; 1.75 ± 0.28 [mu]g/g dw) than for raptors that consume predominantly small mammalian prey (Non-bird specialists; Northern Harrier Circus hudsonius: n=112; 0.75 ± 0.10 [mu]g/g dw, Red-tailed Hawk Buteo jamaicensis: n=109; 0.56 ± 0.06 [mu]g/g dw, American Kestrel Falco sparverius: n=16; 0.57 ± 0.14 [mu]g/g dw, Prairie Falcon Falco mexicanus: n=10; 0.41 ± 0.13 [mu]g/g dw) except for Red-shouldered Hawks Buteo lineatus: n=10; 1.94 ± 0.61 [mu]g/g dw. 2) To assess Hg exposure trends over time, we analyzed THg concentrations in feathers collected from three species spanning a 13-year period (2002-2014) in the Pacific Flyway. Over the 13-year period, feather THg concentrations were not consistent among species: we found a slight increase with time for juvenile Northern Harriers, no trend for adult Sharp-shinned Hawks, and a slight decrease with time for adult Red-tailed Hawks. Additionally, feather THg concentration in adult Red-tailed Hawks was positively correlated with migration passage date, meaning that individuals migrating through the migration banding site in the Marin Headlands, California later averaged higher THg concentrations in their feathers. 3) To assess Hg trends across North America, we analyzed THg concentrations in breast feathers collected from juvenile Merlins in four North American flyways. Mean feather THg concentrations (Least-squared mean ± standard error [mu]g/g dw) in juvenile merlin averaged greater in the Mississippi Flyway (n=56; 2.14 ± 0.18 [mu]g/g dw) than those in the Pacific Flyway (n=49; 1.15 ± 0.11 [mu]g/g dw) and Intermountain Flyway (n=23; 1.14 ± 0.16 [mu]g/g dw), and Atlantic Flyway (n=38; 1.75 ± 0.19 [mu]g/g dw) averaged greater than the Pacific Flyway. This study demonstrates that feathers collected by raptor migration monitoring sites across North America have utility for biomonitoring Hg contamination in terrestrial food webs across large spatial scales and time. Every raptor breast feather analyzed in this study had detectable concentrations of Hg, which is to be expected due to the ubiquitous nature of Hg pollution in the environment. However, these results highlight that raptors with diets not directly linked to aquatic food webs are still at risk of Hg exposure effects despite receiving relatively little research attention compared to raptors with a high proportion of fish or water birds in their diet. Furthermore, this study highlights elevated Hg exposure risk for terrestrial-feeding raptors that consume a high proportion of songbird prey or are highly associated with contaminated habitats and regions.
The Raptors Of North America
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Author : Doug Thal DVM
language : en
Publisher: Independently Published
Release Date : 2024-04-15
The Raptors Of North America written by Doug Thal DVM and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-04-15 with Nature categories.
Dive into the fascinating world of North American Raptors with this unique introductory handbook! Written by a large animal veterinarian who was raised on a New Mexican ranch on which he saw these birds daily, and who has continued to observe and admire them for over 50 years. "An Introduction to North American Birds of Prey" is an excellent first guide to these majestic creatures. From the tiny, colorful, and common American Kestrel, to the giant, critically endangered California Condor, this book provides basic descriptions, ranges, identifying characteristics, and beautiful images of 34 raptor species that inhabit North America. Whether you're a seasoned birdwatcher or just starting out, this book should help you gain a deeper appreciation for these remarkable animals. Learn about the unique characteristics, identifying field marks, and unique behaviors of each species, and read about interesting facts and personal observations. The book is also the companion and image reference for "The Raptors of North America: A Coloring Book of North American Birds of Prey" Packed with information and beautiful imagery, This is a must-have for anyone interested in birds and wildlife. Start your journey into the world of raptors today!
