Catégorie :: Livres anglais (6020 livres)

Saving Migrant Birds: Developing Strategies for the Future
de John Faaborg(Ed. University of Texas Press) Isbn : 0292725442
47.5 €
In the 1980s, numerous scientific surveys documented both declining bird populations, especially among Neotropical songbirds that winter in the tropics, and the loss of tropical rain forest habitat. Drawing the seemingly obvious conclusion, scientists and environmental activists linked songbird declines to loss of tropical habitats and alerted the world to an impending ecological catastrophe. Their warnings led to the establishment of the Neotropical Migratory Bird Conservation Program, also known as Partners in Flight, the self-proclaimed largest conservation effort in history. Looking back over more than a decade of efforts to save migrant birds, John Faaborg offers the first serious evaluation of the state of songbird populations today, the effectiveness of conservation programs such as...

Aloft: A Meditation on Pigeons Pigeon-Flying
de Stephen Bodio(Ed. Pruett Publishing Co) Isbn : 0871088371
12.3 €
In resonant, well-crafted prose, Bodio ushers readers into an utterly captivating world--the world of the often overlooked birds we call pigeons. Pigeons are among the most genetically malleable of birds, making for an amazing variety of breeds and natural abilities. Original line drawings.

Hawking Ground Quarry: A Treatise on Hawking
de Bruce A. Haak(Ed. Hancock House Publishers Ltd ,Canada) Isbn : 0888393202
20.64 €
In Pirates of the Plains: The Biology of the Prairie Falcon, Bruce Haak shares his deep passion for the prairie falcon and its habits in this fascinating story of his journey to understand and record the behavior of this spirited bird of prey. Haak's rich prose probes intimately into both the life of the birds ass well as the unfolding of his own philosophy and experience of life. Beautifully illustrated with seventy-six full color photos, Pirates of the Plains is a splendid addition to the aviary studies.

Partnerships in Birds: The Study of Monogamy
de Jeffrey M. Black(Ed. OUP Oxford) Isbn : 0198548605
118.31 €
In pairs, male and female birds appear to work as a team, competing for food, defending nests, and protecting predators, but in fact, because each individual strives to maximize its own reproductive potential, conflicts can occur if one finds a better partner. So while some birds choose one mate for life, others have many partners. In this book, fourteen classic studies of bird behavior are brought together to compare the different partnership patterns from ecological and evolutionary...

Partnerships in Birds: The Study of Monogamy
de Jeffrey M. Black(Ed. Oxford University Press) Isbn : 0198548613
74.36 €
In pairs, male and female birds appear to work as a team, competing for food, defending nests, and protecting predators, but in fact, because each individual strives to maximize its own reproductive potential, conflicts can occur if one finds a better partner. So while some birds choose one mate for life, others have many partners. In this book, fourteen classic studies of bird behavior are brought together to compare the different partnership patterns from ecological and evolutionary perspectives. Particular attention is paid to the availability of mates, the selection process and the consequences of choosing one mate over another. By comparing between and within species, each chapter outlines the features that influence a pair's reproductive performance and how this interacts with ecolog...

Birds at Your Feeder: A Guide to Feeding Habits, Behavior, Distribution, and Abundance
de Erica H. Dunn, Diane L. Tessaglia-Hymes(Ed. WW Norton Co) Isbn : 0393047377
24.98 €
In North America, between 30 and 40 million people purchase bird feed each year. For anyone who feeds birds, this book will be an indispensable companion. This book, based on years of study and surveys, offers more information on the feeding habits of birds than has ever before been available. Here we will find out what species frequent feeders in different parts of North America, how often these species visit feeders, and what they prefer to eat. We learn, for instance, that a red-winged blackbird may not try a novel food until it sees another try it first; that over 150 pygmy nuthatches have been reported roosting together in a single tree cavity; that redpolls can spend adjacent winters in sites over 1200 miles apart; and that crows post sentinels in feeding flocks to watch for danger. ...

Crows and Jays: A Guide to the Crows, Jays and Magpies of the World
de Steve Madge(Ed. Helm) Isbn : 0713639997
33.06 €
In no other group of perching birds has evolution produced such a degree of variation as in the 120 species of crows and jays that inhabit the world today. They range from the tiny Hume's Ground-jay of the steppe-highlands of Tibet to the huge Thick-billed Raven of the mountains of Ethiopia. Some are exceedingly beautiful in color, grace, and form; others are sinister in appearance. Some appear in tales of mythology and superstition; others are merely regarded as agricultural pests. The great majority, however, remain largely unknown, coming into contact with humans mainly when their specialized habitats are destroyed. Over 20 species are now regarded as internationally endangered and some may disappear before we have a chance to learn much about them. This guide details all species of cor...

Crows and Jays: A Guide to the Crows, Jays and Magpies of the World
de Steve Madge, Hilary Burn(Ed. Helm) Isbn : 0713652071
23.61 €
In no other group of perching birds has evolution produced such a degree of variation as in the 120 species of crows and jays that inhabit the world today. They range from the tiny Hume's Ground-jay of the steppe-highlands of Tibet to the huge Thick-billed Raven of the mountains of Ethiopia. Some are exceedingly beautiful in color, grace, and form; others are sinister in appearance. Some appear in tales of mythology and superstition; others are merely regarded as agricultural pests. The great majority, however, remain largely unknown, coming into contact with humans mainly when their specialized habitats are destroyed. Over 20 species are now regarded as internationally endangered and some may disappear before we have a chance to learn much about them. This guide details all species of cor...

Crows and Jays.
de Steve Madge(Ed. Princeton University Press) Isbn : 0691088837
141.8 €
In no other group of perching birds has evolution produced such a degree of variation as in the 120 species of crows and jays that inhabit the world today. They range from the tiny Hume's Ground-jay of the steppe-highlands of Tibet to the huge Thick-billed Raven of the mountains of Ethiopia. Some are exceedingly beautiful in color, grace, and form ; others are sinister in appearance. Some appear in tales of mythology and superstition ; others are merely regarded as agricultural pests. The great majority, however, remain largely unknown, coming into contact with humans mainly when their specialized habitats are destroyed. Over 20 species are now regarded as internationally endangered and some may disappear before we have a chance to learn much about them. This guide details all species of c...

A Hunter's Road: A Journey With Gun and Dog Across the American Uplands
de Jim Fergus(Ed. Henry Holt Company Inc) Isbn : 0805016198
23.76 €
In middle age, the author fulfilled a childhood dream by spending five months Fergus hunted and spoke with famous and infamous hunters, with biologists, authors such as George Bird Evans, and land owners. Like another Fergus (Charles, A Rough-Shooting Dog , LJ 8/91), he writes lyrically about the hunter's role in conservation, the relationship with his dog and with other hunters, the anti-hunting movement, and the very nature of hunting itself. Missing his targets frequently, sometimes admiring rather than shooting, he demonstrates his own axiom that "grace is a quality central to sport and art." This book is highly recommended for public libraries where upland bird hunting is pursued (and also where it is attacked).- Roland Person, Southern Illinois Univ. Lib., CarbondaleCopyright 1992 Re...