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Avian Migration

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Release : 2013-03-09
Genre : Science
Kind : eBook
Book Rating : 576/5 ( reviews)

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Book Synopsis Avian Migration by : Peter Berthold

Download or read book Avian Migration written by Peter Berthold. This book was released on 2013-03-09. Available in PDF, EPUB and Kindle. Book excerpt: P. Berthold and E. Gwinnd Bird migration is an intriguing aspect of the living world - so much so that it has been investigated for as long, and as thoroughly, as almost any other natural phenomenon. Aristotle, who can count as the founder of scientific ornithology, paid very close attention to the migrations of the birds he ob served, but it was not until the reign of Friedrich II, in the first half of the 13th century, that reliable data began to be obtained. From then on, the data base grew rapidly. Systematic studies of bird migration were introduced when the Vogelwarte Rossitten was founded, as the first ornithological biological observation station in the world (see first chapter "In Memory of Vogelwarte Rossitten"). This area later received enormous impetus when ex perimental research on the subject was begun: the large-scale bird-ringing experiment initiated in Rossitten in 1903 by Johannes Thienemann (who was inspired by the pioneering studies of C. C. M. Mortensen), the experiments on photoperiodicity carried out by William Rowan in the 1920s in Canada and retention and release experiments performed by Thienemann in the 1930s in Rossitten, the first experimental study on the orientation of migratory birds. After the Second World War, migration research, while continuing in the previous areas, also expanded into new directions such as radar ornithology, ecophysiology and hormonal control mechanisms, studies of evolution, ge netics, telemetry and others.

The Avian Migrant

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Release : 2013-06-11
Genre : Science
Kind : eBook
Book Rating : 633/5 ( reviews)

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Book Synopsis The Avian Migrant by : John H. Rappole

Download or read book The Avian Migrant written by John H. Rappole. This book was released on 2013-06-11. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of migration, regardless of the distance involved, is to exploit two or more environments suitable for survival or reproduction over time, usually on a seasonal basis. Yet individual organisms can practice the phenomenon differently, and birds deploy unique patterns of movement over particular segments of time. Incorporating the latest research on bird migration, this concise, critical assessment offers contemporary readers a firm grasp of what defines an avian migrant, how the organism came to be, what is known about its behavior, and how we can resolve its enduring mysteries. John H. Rappole's sophisticated survey of field data clarifies key ecological, biological, physiological, navigational, and evolutionary concerns. He begins with the very first migrants, who traded a home environment of greater stability for one of greater seasonality, and uses the structure of the annual cycle to examine the difference between migratory birds and their resident counterparts. He ultimately connects these differences to evolutionary milestones that have shaped a migrant lifestyle through natural selection. Rather than catalogue and describe various aspects of bird migration, Rappole considers how the avian migrant fits within a larger ecological frame, enabling a richer understanding of the phenomenon and its critical role in sustaining a hospitable and productive environment. Rappole concludes with a focus on population biology and conservation across time periods, considering the link between bird migration and the spread of disease among birds and humans, and the effects of global warming on migrant breeding ranges, reaction norms, and macroecology.

Bird Migration

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Author :
Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 423/5 ( reviews)

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Book Synopsis Bird Migration by : Eberhard Gwinner

Download or read book Bird Migration written by Eberhard Gwinner. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: E. GWINNER! The phenomenon of bird migration with its large scale dimensions has attracted the attention of naturalists for centuries. Worldwide billions of birds leave their breeding grounds every autumn to migrate to areas with seasonally more favor able conditions. Many of these migrants travel only over a few hundred kilo meters but others cover distances equivalent to the circumference of the earth. Among these long-distance migrants are several billion birds that invade Africa every autumn from their West and Central Palaearctic breeding areas. In the Americas and in Asia the scope of bird migration is of a similar magnitude. Just as impressive as the numbers of birds are their achievements. They have to cope with the enormous energetic costs of long-distance flying. particularly while crossing oceans and deserts that do not allow replenishment of depleted fat reserves. They have to appropriately time the onset and end of migrations. both on a daily and annual basis. And finally. they have to orient their migratory movements in space to reach their species- or population-specific wintering and breeding grounds, irrespective of the variable climatic conditions along their migratory routes.

Bird Migration

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Release : 1993-03-25
Genre : Nature
Kind : eBook
Book Rating : 222/5 ( reviews)

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Book Synopsis Bird Migration by : Thomas Alerstam

Download or read book Bird Migration written by Thomas Alerstam. This book was released on 1993-03-25. Available in PDF, EPUB and Kindle. Book excerpt: Bird migration is one of the most astonishing feats in the natural world. Millions of birds migrate, often over very large distances, to benefit from seasonal resource surpluses and to avoid predators and competitors. The aim of this study is to survey the phenomena.

Atlas of Bird Migration

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Author :
Release : 2011
Genre : Nature
Kind : eBook
Book Rating : 711/5 ( reviews)

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Book Synopsis Atlas of Bird Migration by : Jonathan Elphick

Download or read book Atlas of Bird Migration written by Jonathan Elphick. This book was released on 2011. Available in PDF, EPUB and Kindle. Book excerpt: Discusses how birds migrate and provides information on migrations in each region of the world and on the migrating habits of hundreds of species of birds.

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