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Author: Pete Dunne
Publisher: Princeton University Press
ISBN: 0691156948
Category : Nature
Languages : en
Pages : 208
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Book Description
A simpler and more user-friendly visual approach to gull identification This unique photographic field guide to North America’s gulls provides a comparative approach to identification that concentrates on the size, structure, and basic plumage features of gulls—gone are the often-confusing array of plumage details found in traditional guides. Featuring hundreds of color photos throughout, Gulls Simplified illustrates the variations of gull plumages for a variety of ages, giving readers strong visual reference points for each species. Extensive captions accompany the photos, which include comparative photo arrays, digitized photo arrays for each age group, and numerous images of each species—a wealth of visual information at your fingertips. This one-of-a-kind guide includes detailed species accounts and a distribution map for each gull. An essential field companion for North American birders, Gulls Simplified reduces the confusion commonly associated with gull identification, offering a more user-friendly way of observing these marvelous birds. Provides a simpler approach to gull identification Features a wealth of color photos for easy comparison among species Includes detailed captions that explain identification criteria and aging, with direct visual reinforcement above the captions Combines plumage details with a focus on size, body shape, and structural features for easy identification in the field Highlights important field marks and physical features for each gull
Author: Pete Dunne
Publisher: Princeton University Press
ISBN: 0691156948
Category : Nature
Languages : en
Pages : 208
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Book Description
A simpler and more user-friendly visual approach to gull identification This unique photographic field guide to North America’s gulls provides a comparative approach to identification that concentrates on the size, structure, and basic plumage features of gulls—gone are the often-confusing array of plumage details found in traditional guides. Featuring hundreds of color photos throughout, Gulls Simplified illustrates the variations of gull plumages for a variety of ages, giving readers strong visual reference points for each species. Extensive captions accompany the photos, which include comparative photo arrays, digitized photo arrays for each age group, and numerous images of each species—a wealth of visual information at your fingertips. This one-of-a-kind guide includes detailed species accounts and a distribution map for each gull. An essential field companion for North American birders, Gulls Simplified reduces the confusion commonly associated with gull identification, offering a more user-friendly way of observing these marvelous birds. Provides a simpler approach to gull identification Features a wealth of color photos for easy comparison among species Includes detailed captions that explain identification criteria and aging, with direct visual reinforcement above the captions Combines plumage details with a focus on size, body shape, and structural features for easy identification in the field Highlights important field marks and physical features for each gull
Author: Klaus Malling Olsen
Publisher: A&C Black
ISBN: 1408135779
Category : Nature
Languages : en
Pages : 607
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Book Description
This eagerly awaited guide offers the most comprehensive treatment ever published on the gulls of Europe, Asia and North America. A total of 43 species is treated, and every species is described in considerable detail, with a full description of each plumage and racial variation. Gulls are intelligent, versatile, opportunistic, and ecological generalists. As such, they exploit a variety of habitats, both coastal and inland, take a wide range of food, and are often extremely abundant. They are also great wanderers, with several American species regularly appearing in Western Europe and vice versa. As well as identification criteria, this book includes an up-to-date assessment of the range and status of every species, together with information on patterns of vagrancy. This important guide is published at a critical time in the development of dull taxonomy. The large, white-headed forms occurring in the region comprise a superspecies complex, with the precise relationships between the various components still under considerable debate. A thorough illustrative and textual treatment of the group is much needed, and this book provided the most complete overview of the complex. The text is complemented not only by superb colour paintings by Hans Larrson, but also by a large selection of colour photographs, sourced from some of the finest bird photographers in the world. This is the essential reference to a fascinating and endlessly challenging group of birds.
Author: Jon Fjeldså
Publisher:
ISBN:
Category : Black-headed gull
Languages : en
Pages : 72
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Book Description
Author: C.J. Barnard
Publisher: Springer Science & Business Media
ISBN: 9400948646
Category : Science
Languages : en
Pages : 315
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Book Description
In the early years of this century a Scottish doctor speculated on the evolutionary origin of human tears. It seemed to him that with the increase in brain size and cognitive powers of our early ancestors many events in the struggle for existence would be just too distressing to observe. How comforting then, for the mother, distraught by the sight of her child being devoured by a lion, to cloud her vision with a flood of tears! Just so, though if the good doctor had pondered further, the following picture might have occurred to him, comfortable in his speculative armchair, and given him some pause for thought. ' ~ . . . . ~ . . ~ ~ . . •. . u" . . , ~- . ' _ . . . . . . . vii viii SERIES EDITOR'S FOREWORD These stories do not, of course, get us very far in understanding the evolution of tears or anything else, but they do remind us how far the study of behavioural adaptation has come this century. This is, in fact, an exciting time for students of behaviour. The last twenty years have seen a great advance in the theoretical armoury for tackling questions of behavioural evolution and adaptation, and a parallel expansion in empirical studies, particularly in the field. The concepts of inclusive fitness and the evolutionarily stable strategy, for example, have helped to explain major features of social behaviour and have generated entirely new questions and predictions for the field worker to examine.
Author: Klaus Malling Olsen
Publisher: Princeton University Press
ISBN: 0691180598
Category : Nature
Languages : en
Pages : 370
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Book Description
A comprehensive photographic guide to the world’s gull species With more than 50 gull species in the world, this family of seabirds poses some of the greatest field identification challenges of any bird group: age-related plumage changes, extensive variations within species, frequent hybridization, and complex distribution. Gulls of the World takes on these challenges and is the first book to provide a comprehensive look at these birds. Concise text emphasizes field identification, with in-depth discussion of variations as well as coverage of habitat, status, and distribution. Abundant photographs highlight identification criteria and, crucially, factor in age and subspecific field separation. Informative species accounts are accompanied by detailed color range maps. Gulls of the World is the most authoritative photographic guide to this remarkable bird family. The first book to provide in-depth coverage of all the world's gull species More than 600 stunning color photographs Concise text looks at variations, habitat, status, and distribution Informative species accounts and color range maps
Author: Hans Kruuk
Publisher: Brill Archive
ISBN:
Category : Birds
Languages : en
Pages : 170
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Book Description
Author: James A. Jobling
Publisher: Bloomsbury Publishing
ISBN: 1408133261
Category : Nature
Languages : en
Pages : 433
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Book Description
A comprehensive dictionary of the meaning and derivation of scientific bird names. Many scientific bird names describe a bird's habits, habitat, distribution or a plumage feature, while others are named after their discoverers or in honour of prominent ornithologists. This extraordinary work of reference lists the generic and specific name for almost every species of bird in the world and gives its meaning and derivation. In the case of eponyms brief biographical details are provided for each of the personalities commemorated in the scientific names. This fascinating book is an outstanding source of information which will both educate and inform, and may even help to understand birds better.
Author: Niko Tinbergen
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 320
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Book Description
Author: Diego Gil
Publisher: Oxford University Press, USA
ISBN: 0199661588
Category : Nature
Languages : en
Pages : 236
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Book Description
This edited volume adopts an evolutionary framework to explore how pre-existing differences in life history, behaviour, and physiology of birds may determine the course of their adaptation to urban habitats.
Author: Bernd Würsig
Publisher: Academic Press
ISBN: 0080920357
Category : Science
Languages : en
Pages : 458
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Book Description
The Dusky Dolphin: Master Acrobat Off Different Shores covers various topics about the dusky dolphin, including its taxonomy, history and demography, ecology, and behavior. After introducing the dusky dolphin as a member of the genus Lagenorhynchus under the family Delphinidae, the book continues by describing its life history, its demographic patterns, and its role in the food web considering predation, parasitism, and competition. The book also includes chapters that discuss the interaction of the dusky dolphin with its habitats, such as the dusky dolphin's sound production, its foraging at night and in daylight, its survival strategies in response to predator threats, the mating habits of New Zealand duskies, calf rearing, sexual segregation, and genetic relationships. Other chapters address the interaction of dusky dolphins with humans. This book offers information about dusky dolphins off Southern Africa and discussions about the patterns of sympatry in Lagenorhynchus and Cephalorhynchus. Finally, comparisons between dusky dolphins and great apes as large-brained mammals are also reviewed in this book. - Only book fully devoted to the southern hemisphere "dusky" dolphin - Heavily illustrated with charts, figures, tables, and all color photos - Written by a cadre of experts intimately familiar with dolphin field work - Written in an accurate yet accessible style for the scientist and natural historian alike
