Raptor Migration Watch-site Manual PDF Download
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Author:
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 200
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Book Description
Author:
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 200
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Book Description
Author: K.L. Bildstein
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Colin Tudge
Publisher: Crown
ISBN: 0307459764
Category : Science
Languages : en
Pages : 482
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Book Description
• How are birds so good at flying and navigating? • Why are birds so like mammals– and yet so very different? • Did birds descend from dinosaurs, and if so, does that mean birds are dinosaurs? • How do they court each other and fend off rivals? • What' s being communicated in birdsong? • Can we ever know how birds think? In this fascinating exploration of the avian class, Colin Tudge considers the creatures of the air. From their evolutionary roots to their flying, feeding, fighting, mating, nesting, and communicating, Tudge provocatively ponders what birds actually do–as well as why they do it and how. With the same curiosity, passion, and insight he brought to redwoods, pines, and palm trees in his widely acclaimed book The Tree, Tudge here studies sparrows, parrots, and even the Monkey-eating Eagle to better understand their world–and our own. There is far more to a bird's existence than gliding gracefully on air currents or chirping sweetly from fence posts–the stakes are life and death. By observing and explaining the complex strategy that comes into play with everything from migration to social interaction to the timing of giving birth to young, Tudge reveals how birds are uniquely equipped biologically to succeed and survive. And he offers an impassioned plea for humans to learn to coexist with birds without continuing to endanger their survival. Complete with an "annotated cast list" of all the known birds in the world– plus gorgeous illustrations–The Bird is a comprehensive and delightfully accessible guide for everyone from dedicated birders to casual birdwatchers that celebrates and illuminates the remarkable lives of birds.
Author:
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 832
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Author:
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 918
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Book Description
Author: Keith L. Bildstein
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 474
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Book Description
« Think about how we know about past events in human history (e.g., the expansion of the Roman Empire, or the American Revolution). What types of records document those events? Now think about Earth's history, specifically the past environmental or climatic conditions at times before recorded human history. What records might there be of such conditions? Make a list of your ideas. n assemblage of five major types of natural archives of Earth's environmental and climatic history. What common feature(s) do each of these paleoclimate archives share? an assemblage of 5 major types of natural records, or archives, of Earth's environmental and climatic history. Just like a diary or other historical document, the layers in these natural archives contain indirect evidence (i.e., proxies) about past conditions and events, recorded in a sequential order. The evidence is specific to a certain time period and may be general or very detailed, depending on the rate that information was recorded. The faster the rate at which the recorder grew (trees and corals), accumulated (snow and ice), or was deposited (sedimentary sequences), the more detailed the record is, and the higher its resolution. For example, a record in which an annual signal can observed has a very high resolution. In contrast, if the finest observable details are on the order of a million years, then that record would have a low resolution. »--
Author: Michael O'Neal Campbell
Publisher: CRC Press
ISBN: 1315278081
Category : Nature
Languages : en
Pages : 648
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Book Description
This book examines the current literature and knowledge on the evolution and ecology of all the birds named as eagles, with particular emphasis on the larger species. It also examines the past and current relations between eagles and people, including habitat change and conservation issues. Eagle ecologies and conservation are currently seriously impacted by human activities such as industrialization, urbanization, pollution, deforestation and hunting. Some eagle species have consequently experienced extreme population changes. There are, however, some positive developments. Eagles have a strong, historic bond with human civilization, due to their status as the world’s most charismatic birds. Conservation policies have also been successful in repopulating some ecosystems with breeding eagles. Therefore, despite the complexity of this relationship, there may yet be hope for this unique species group, frequently rated as the kings of birds, and symbolic of human power, ambition, royalty, nationality, and even concepts of God. It is hoped that this book will contribute to the further understanding of these unique and fantastic birds.
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ISBN:
Category : Hawks
Languages : en
Pages : 32
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Book Description
Author: Keith L. Bildstein
Publisher: Cornell University Press
ISBN: 150170785X
Category : Nature
Languages : en
Pages : 331
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Book Description
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.
Author: Kelly L. Barth
Publisher: Greenhaven Press
ISBN:
Category : Birds of prey
Languages : en
Pages : 120
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Book Description
Discusses birds of prey and their endangered status, including the problem of pesticides, the struggle for space and resources, breeding in captivity and reintroduction to the wild, and worldwide recovery efforts.
