Download or read book La Migration Des Oiseaux Primary Source Edition written by A. de Brevans and published by Nabu Press. This book was released on 2014-01 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.

Download or read book Social Problems written by Howard S. Becker and published by . This book was released on 1966-01 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The migrations of birds written by Alexander Wetmore and published by . This book was released on 1926 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bird Migration written by Eberhard Gwinner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 436 pages. 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.

Download or read book The Migrations of Birds written by Alexander Wetmore and published by . This book was released on 1920 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Avian Migration written by Peter Berthold and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 601 pages. 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.

Download or read book The Migration of Birds written by Alexander Wetmore and published by . This book was released on 1930 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book La Migration Des Oiseaux written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Les migrations des oiseaux written by Fernand Cathelin and published by . This book was released on 1920 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Migrations of Birds written by Jean Dorst and published by . This book was released on 1962 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete and up-to-date account of what is known about the amazing phenomenon of the migrations of birds.

Download or read book Les Migrations Des Oiseaux by F Cathelin written by F. Cathelin and published by . This book was released on 1920 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bird Migration written by Thomas Alerstam and published by Cambridge University Press. This book was released on 1993-03-25 with total page 438 pages. 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.

Download or read book Migration of Birds written by Frederick Charles Lincoln and published by . This book was released on 1979 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bird Migrations Ecological and Physiological Factors written by Boris Evseevich Bykhovskiĭ and published by John Wiley & Sons. This book was released on 1974 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Migrations of Birds Classic Reprint written by Alexander Wetmore and published by Forgotten Books. This book was released on 2017-10-21 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Migrations of Birds The material included is based on study and ob servation on the part of the author during a period of more than twenty years. It is intended as a sum mary of present knowledge of migration, with the various factors that affect it in its broader aspects, without entering upon precise statistics of move ment for the many species involved. Such figures may be left for treatises of another character. After careful consideration of the subject the writer is profoundly impressed by the mass of detail regarding the movements of birds that has been assembled and the little that has been definitely ascertained regarding the underlying principles that control migration. There is much that remains to be established in this phase of the subject. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Problems of Bird migration written by Arthur Landsborough Thomson and published by . This book was released on 1926 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Bird Migration written by P. Berthold and published by Springer Science & Business Media. This book was released on 1996 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considers all aspects of research since experimentation began on the subject in 1925