Flight Strategies Of Migrating Hawks
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| Author | : Paul Kerlinger |
| Publisher | : |
| Total Pages | : 375 |
| Release | : 1989 |
| Genre | : Pets |
| ISBN | : 9780226431673 |
Hawks fly at very high altitudes, sometimes over water, and thus their flight behavior and migration patterns are extremely difficult to study. Now, based on nearly ten years of research, this book provides the most complete analysis to date of how hawks migrate. Paul Kerlinger has employed both direct observations and radar techniques to obtain a much more accurate understanding of the migratory behavior of hawks and the "decisions" they make in flight. And, he has integrated data on the flight behavior of raptors in general with information about their ecology, physiology, evolution, and nonmigratory behavior. Kerlinger begins with an overview, discussing ecology and geography, research methods, natural history, and evolution, and atmospheric structure. He then addresses specific aspects of flight behavior: aerodynamics, morphology, mechanics, direction, altitude, flocking, water crossing, speed selection, daily distance traveled, and flight strategies. Kerlinger describes each aspect of behavior quantitatively, testing mechanistic hypotheses. In conclusion, he examines how migrants integrate these behavioral components. Throughout the text he draws comparisons between the migratory flight behavior of hawks and that of other taxa. By means of such comparisons, researchers can gain insight into the selective pressures that shape the behavior of migrant species.
| Author | : Bill Welch |
| Publisher | : North Country Books |
| Total Pages | : 168 |
| Release | : 1987 |
| Genre | : Birds |
| ISBN | : |
The New England Hawk Migration Study combined the world of hawkwatching and aeronautical engineering for a unique view of birds in flight. Specially outfitted in a Sperber motorglider, which allowed slow, sustained highly maneuverable flying, author Bill Welch and his colleagues followed the hawks on their East Coast migrations, riding the same thermals as the raptors, and making detailed observations never before possible of hawk flight and navigation.With over 35 black-and white photographs and charts, Hawks at My Wingtipsis a detailed and fascinating look at the worlds of birdwatching and high-performance flying. Both written and photographic accounts of these flights capture a feeling of what it is like to soar with nothing but wind under your wings!
| Author | : Michele Panuccio |
| Publisher | : CRC Press |
| Total Pages | : 411 |
| Release | : 2021-07-28 |
| Genre | : Nature |
| ISBN | : 1351023608 |
Given their roles in the ecosystem, raptors are widely considered the flagship or umbrella species among birds. Most species undertake a seasonal journey that is impressive because of the length, and the imposing natural barriers such as deserts and seas that they fly over. The migration of birds of prey has unique characteristics in the animal world because of their morphology and flight style. The flying path of Afro-Palearctic migrants between breeding and wintering grounds is determined by several factors such as morphology of the birds, geography, behavioural adaptations. The book analyses the migration patterns of raptors along the Afro-Palearctic migratory system, and summarizes the recent research on these top predator species. Behavioural adaptations such as the importance of social interactions and the modulation of the different flight styles as well as ecological interactions with the encountered environment and weather conditions en route are described in the book. Moreover, the impact of climate change on the migratory behaviour and key conservation issues are discussed. The book provides an overview of the migratory characteristics and flyway patterns of all European raptors species and also some Asian ones. These chapters have been written by some of the most important raptor specialists, giving a complete picture of the different migration strategies on the basis of both traditional methods and new technologies.
| Author | : |
| Publisher | : |
| Total Pages | : 624 |
| Release | : 1995 |
| Genre | : |
| ISBN | : |
| Author | : Donald S. Heintzelman |
| Publisher | : |
| Total Pages | : 392 |
| Release | : 1986-10-22 |
| Genre | : Nature |
| ISBN | : |
There are forty species of hawks in North America, including vultures, the California condor, and the bald eagle, our national bird. Heintzelman's monumental study is a comprehensive survey of what we know about the migrations of these magnificent birds in North America, Central America, and the West Indies. After a general introduction on migration season, speeds, and methodology, eleven detailed chapters survey migration routes and statistics in all the following regions: eastern and western Canada, the Great Lakes area, New England, the Middle Atlantic states, southern Appalachia, the Gulf Coast, the Central states, Western states, Central America, and the West Indies. Subsequent chapters deal with the influence of weather systems and local weather variables, updrafts, thermals, altitudes and the daily rhythm of migrations, the influence of age and geography, and the role of hawk counts as indices to population trends.
| Author | : |
| Publisher | : |
| Total Pages | : 918 |
| Release | : 2000 |
| Genre | : Birds |
| ISBN | : |
| Author | : Clay Sutton |
| Publisher | : Houghton Mifflin Harcourt |
| Total Pages | : 152 |
| Release | : 1996 |
| Genre | : Nature |
| ISBN | : 9781576300008 |
Hawk and eagle watching is an increasingly popular birding activity. Special knowledge is required, however, and in this lavishly photographed, full-color book, naturalists/authors Clay and Patricia Sutton provide all the information readers need to know, no matter where they live in the United States and Canada. Full-color photos throughout.
| Author | : Keith L. Bildstein |
| Publisher | : Cornell University Press |
| Total Pages | : 356 |
| Release | : 2006 |
| Genre | : Nature |
| ISBN | : 9780801441790 |
"Keith L. Bildstein has studied migrating raptors on four continents and directs the conservation science program at Hawk Mountain Sanctuary, Pennsylvania, the world's first refuge for migratory birds of prey. In this book, he details the stories and successes of twelve of the world's most important raptor-viewing spots, among them Cape May Point, New Jersey; Veracruz, Mexico; Kekoldi, Costa Rica; the Strait of Gibralter, Spain; and Elat, Israel."--BOOK JACKET.
| Author | : Jerry Liguori |
| Publisher | : Princeton University Press |
| Total Pages | : 144 |
| Release | : 2016-08-10 |
| Genre | : Nature |
| ISBN | : 1400884209 |
Identifying hawks in flight is a tricky business. Across North America, tens of thousands of people gather every spring and fall at more than one thousand known hawk migration sites--from New Jersey's Cape May to California's Golden Gate. Yet, as many discover, a standard field guide, with its emphasis on plumage, is often of little help in identifying those raptors soaring, gliding, or flapping far, far away. Hawks from Every Angle takes hawk identification to new heights. It offers a fresh approach that literally looks at the birds from every angle, compares and contrasts deceptively similar species, and provides the pictures (and words) needed for identification in the field. Jerry Liguori pinpoints innovative, field-tested identification traits for each species from the various angles that they are seen. Featuring 339 striking color photos on 68 color plates and 32 black & white photos, Hawks from Every Angle is unique in presenting a host of meticulously crafted pictures for each of the 19 species it covers in detail--the species most common to migration sites throughout the United States and Canada. All aspects of raptor identification are discussed, including plumage, shape, and flight style traits. For all birders who follow hawk migration and have found themselves wondering if the raptor in the sky matches the one in the guide, Hawks from Every Angle--distilling an expert's years of experience for the first time into a comprehensive array of truly useful photos and other pointers for each species--is quite simply a must. Key Features? The essential new approach to identifying hawks in flight Innovative, accurate, and field-tested identification traits for each species 339 color photos on 68 color plates, 32 black & white photos Compares and contrasts species easily confused with one another, and provides the pictures (and words) needed for identification in the field Covers in detail 19 species common to migration sites throughout the North America Discusses light conditions, how molt can alter the shape of a bird, aberrant plumages, and migration seasons and sites User-friendly format
| Author | : Keith L. Bildstein |
| Publisher | : Cornell University Press |
| Total Pages | : 331 |
| Release | : 2017-05-02 |
| Genre | : Nature |
| ISBN | : 150170785X |
Raptors are formally classified into five families and include birds—such as eagles, ospreys, kites, true hawks, buzzards, harriers, vultures, and falcons—that are familiar and recognized by many observers. These diurnal birds of prey are found on every continent except Antarctica and can thrive in seemingly inhospitable spots such as deserts and the tundra. They have powerful talons and hooked beaks for cutting and tearing meat, and keen binocular vision to aid in their hunting prowess. Because of their large size, distinctive feeding habits, and long-distance flight patterns, raptors intrigue humans and have been the subject of much general interest as well as extensive scientific research. Keith L. Bildstein has watched and studied raptors on five continents and is well prepared to explain their critical importance, not only as ecological entities but also as inspirational tokens across natural and human-dominated landscapes. His book offers a comprehensive and accessible account of raptors, including their evolutionary history, their relationships to other groups of birds, their sensory abilities, their general natural history, their breeding ecology and feeding behavior, and threats to their survival in a human-dominated world. Biologically sound but readable, Raptors is a nontechnical overview of this captivating group. It will allow naturalists, birders, hawk-watchers, science educators, schoolchildren, and the general public, along with new students in the field of raptor biology, to understand and appreciate these birds, and in so doing better protect them.
