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By Graham Scott

Essential Ornithology presents the reader with a concise yet accomplished creation to the biology of birds, essentially the most extensively studied taxonomic teams. The ebook starts off with the debatable query of the dinosaur origins of birds and their next evolution. improvement, anatomy, and body structure are then mentioned through chapters dedicated to avian replica, migration, ecology, and conservation. Sections facing elements of bird/human relationships and poultry conservation supply the publication an utilized context.

Drawing greatly upon the broader medical literature, this enticing textual content areas the result of classical stories of avian biology along the latest clinical breakthroughs. priceless case reports are offered in a concise and interesting kind with the scholar reader most efficient in brain. Key issues are highlighted and proposals for guided analyzing and key references are incorporated all through.

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Among modern birds, feathers are essential in flight and for water-proofing and insulation. They often have a role in communication, for courtship or competition, and in predator avoidance through camouflage. In some cases they even have a tactile function, an example being the feather-derived bristles around the mouths of some insectivores and some nocturnal birds. ). But if you took some time to think about all of the feather types that you have ever experienced their variety might start to bewilder you; ranging as they do from the simple bristles around the beak of some flycatchers to the magnificently ornate tail plumes of male Indian Peafowl Pavo cristatus (Plate 1).

Overlap. In other cases transient hybridization, or genetic swamping, occurs as the range of one species expands and previously isolated species are temporarily brought into contact with one another, the usual outcome being the disappearance of one of the species. The classic example of the stable hybrid zone is that of the black and grey Hooded Crow (Corvus corone cornix) of northern and eastern Europe and the all black Carrion Crow (Corvus corone corone) of southern Europe. (Note that each of these birds has a latin name in three rather than the usual two parts.

Lawrencei’ ) Brewster’s Warbler (Vermivora chrysoptera x pinus, or V. 15 The Blue-winged Warbler/Golden-winged Warbler hybrid types. S. J. (1993) Manual of Ornithology: Avian Structure and Function. Yale University Press, New Haven. 2 Hybridization and duck conservation The White-headed Duck (Oxyura leucocephala) is an eastern European and central Asian species with a small isolated population in Spain. Populations are fragmented and under increasing pressure due to loss of habitat. This, coupled with the fact that populations are small and declining, makes this species globally endangered (the Spanish population fell to just 22 birds in 1977, and the main central Asian population fell from 100,000 in the 1930s to 10,000 in 2000).

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