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Author: Ewan Urquhart
Publisher: A&C Black
ISBN: 1408138018
Category : Nature
Languages : en
Pages : 321
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Book Description
A comprehensive treatment of the birds of the genus Saxicola. The genus Saxicola contains about 13 species, depending on taxonomy. They are a distinctive and popular group of birds, and include two very familiar and attractive British species - the Stonechat and Whinchat. This volume is primarily an identification guide, using colour plates and photographs to illustrate the various races and plumages, but the text also covers the biology, habitat and range of each species. DNA data is presented, and there are distribution maps for each species.
Author: Ewan Urquhart
Publisher: A&C Black
ISBN: 1408138018
Category : Nature
Languages : en
Pages : 321
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Book Description
A comprehensive treatment of the birds of the genus Saxicola. The genus Saxicola contains about 13 species, depending on taxonomy. They are a distinctive and popular group of birds, and include two very familiar and attractive British species - the Stonechat and Whinchat. This volume is primarily an identification guide, using colour plates and photographs to illustrate the various races and plumages, but the text also covers the biology, habitat and range of each species. DNA data is presented, and there are distribution maps for each species.
Author: Roger Lovegrove
Publisher: A&C Black
ISBN: 1408137909
Category : Nature
Languages : en
Pages : 375
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Book Description
This volume sets out for the first time the historical and current status of all the bird species found in Wales together with their present distribution. The rugged countryside of Wales has long been a destination for successive generations of naturalists, ornithologists, oologists and, latterly, birdwatchers. Since the pioneering days of Willoughby and Ray, Pennant and Edward Llwyd, a growing number of intrepid travellers have recorded the wildlife and other natural riches of the mountains and coastlines of Wales. Despite these beginnings and the more recent twentieth century vogue for birdwatching, no volume on the birds of Wales has been produced until now to serve the increasing need for scientifically valid information for conservation purposes. In the years that have passed since the first naturalists visited Wales, changes of unimaginable scale have taken place in the Welsh countryside which have had equally dramatic impacts on the native bird communities. A succession of bird species have either been eliminated deliberately by the hand of man - mainly birds of prey - or have been dispossessed by changes in land use, the spread of industrialisation, urbanisation and pollution, trends which continue today to the increasing detriment of even some of our most familiar countryside birds. Much fine habitat remains however, and new species have come in to colonise Wales and add to the magic of its countryside. The three authors, all staff of the RSPB in Wales, have between them an accumulated experience of some 80 years of first-hand knowledge of birds in the Principality. Their knowledge and love of the birds and Wales itself makes this authoritative volume a landmark both in Welsh and ornithological publishing.
Author: Lukas Jenni
Publisher: Bloomsbury Publishing
ISBN: 1472977203
Category : Nature
Languages : en
Pages : 320
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Book Description
Feathers are amazing structures unique to birds and, for a variety of reasons, they need to be renewed periodically as a whole in a process called moult. During this process, all of the functions of plumage are impaired and most aspects of a bird's life are affected. Every moult determines a bird's appearance anew, and restores plumage efficacy for flight and insulation. Moult profoundly affects physiology and the organization of the annual cycle, and it constrains reproduction and migration. Given these major impacts, which are equal to the other annual challenges of reproduction and migration, it is surprising that research on moult has largely been so neglected a subject. Lukas Jenni and Raffael Winkler have brought together the widely scattered results of studies on the processes and consequences of moult in birds. This book opens with an overview of the functions of plumage, and of feather maintenance and feather wear, and then introduces the two functions of moult: replacement of worn feathers and adjustment of plumage characteristics and appearance. The body of the book then examines feather-growth and the physiology, energetics and control of moult, and how various other physiological processes interact with moult and may compensate for its costs. Significantly, the authors explain how variations in moult and feather quality affect a bird's overall plumage quality, and they highlight the resulting consequences in terms of physical performance, appearance and signalling. Finally, there is a review of all the various solutions that birds have developed to fit moult into the annual cycle. This long-awaited book covers for the first time all aspects of the biology of moult and fills an important gap in the literature, completing our understanding of how the most important annual events in a bird's life fit together into a coherent whole. It draws on a wide range of information – from penguins to small passerines, from raptors to wildfowl – to highlight the variety of the subject and to pinpoint the many gaps in our knowledge along with avenues for fruitful further research.
Author: Simon Aspinall
Publisher: Bloomsbury Publishing
ISBN: 1472986180
Category : Nature
Languages : en
Pages : 241
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Book Description
This is the first dedicated field guide for the United Arab Emirates. The UAE is an increasingly popular tourist destination, with a good infrastructure for visitors. This new field guide is based on the bestselling Birds of the Middle East (2nd edition) and covers all the birds of these Gulf states. The new text written by Simon Aspinall and Richard Porter is specific to the Gulf, and new maps are provided for all breeding birds and regular visitors. The plates are recomposed from Birds of the Middle East, with three extra plates of introduced species.
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Category : Birds
Languages : en
Pages : 360
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Book Description
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Category : English periodicals
Languages : en
Pages : 494
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Category : Natural history
Languages : en
Pages : 350
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Author: Keith Vinicombe
Publisher: A&C Black
ISBN: 1408130351
Category : Nature
Languages : en
Pages : 401
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Book Description
An essential field guide companion covering species pairs or groups that are difficult to identify.
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Category : Zoology
Languages : en
Pages : 234
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Book Description
Author: Ulf Bauchinger
Publisher:
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Category : Science
Languages : en
Pages : 320
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Book Description
