Crows and Jays
A&C Black, 30 серп. 2010 р. - 192 стор.
120 species of crows, jays and their allies exist in the world today. Many are exceedingly beautiful in colour, grace and form, whereas others are black and somewhat sinister in appearance. In no other group of perching birds has evolution produced such a degree of variation, 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 have had a long association with people and appear in tales of mythology and superstition, while others have been regarded as agricultural pests. The great majority, however, remain largely unknown, their only contact with humanity being the destruction of their specialised habitats. As a consequence, more than 20 species are now regarded as internationally endangered, some of which are very poorly known.
The 30 superb colour plates by Hilary Burn in this book depict them all; each plate is accompanied by an informative caption page summarising the criteria required to identify the species, alongside colour world distribution maps. Some of these birds, bearing such evocative names as the Banggai Crow, Mesopotamian Crow and Flores Crow, have never been illustrated before.
The authoritative text by Steve Madge treats each species in depth, summarising identification techniques and concisely reviewing all aspects of corvid behaviour, distribution, population and taxonomy. The author has had first-hand experience of most of the species during his travels throughout the world, travels in which he gradually became fascinated by this very special, but somewhat ignored, group of birds.
Crows and Jays is a combination of scientifically accurate information and an identification guide, planned to give anyone, whether a birdwatcher or biologist, a greater understanding of the lives of these beautiful, yet very complex, group of birds. It will surely be a standard work of reference for many years to come.
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Crows and jays: a guide to the crows, jays, and magpies of the world
Steve Madge,Hilary Burn
Перегляд фрагмента - 1994
Crows and Jays: A Guide to the Crows, Jays and Magpies of the World
Steve Madge,Hilary Burn
Попередній перегляд недоступний - 1994
adult race Alternative name American Crow areas Australian Raven Bill and legs birds blackish Blue Magpie bluish body plumage breast Brown-necked Raven canopy Carrion Crow central chieﬂy Clutch colour corvids Corvus crest crown culmen Cyanocorax darker DISTRIBUTION dull east eastern Endemic Eurasian Jay feeding ﬁrst ﬁve ﬂedging ﬂight ﬂocks ﬂying foraging forecrown forest GEOGRAPHICAL VARIATION glossed Green Magpie grey greyer HABITAT HABITS head Himalayas Hooded Crow House Crow IDENTIFICATION Irides dark brown islands Juvenile duller larger than female legs black Little Raven lowland Male averages Mexico Monotypic nape Nasal tuft neck nest Nominate race Northern Raven overlaps Paciﬁc pairs pale patch Pied Crow plumage populations range roosts rufous SEX/AGE Sexes similar slightly smaller Solitary nester southern species Spotted Nutcracker STATUS tail feathers tarsus tertials Text throat Torresian Crow Treepie trees twigs underparts upperparts VOICE western whitish widespread wings and tail woodland yellow