Results 271 to 280 of about 1,701,221 (334)
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Using occupancy models of forest breeding birds to prioritize conservation planning
Biological Conservation, 2009John Maerz +2 more
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Nature, 1968
Ecological Adaptations for Breeding in Birds By David Lack. Pp. xii + 409. (Methuen: London, July 1968.) 84s.
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Ecological Adaptations for Breeding in Birds By David Lack. Pp. xii + 409. (Methuen: London, July 1968.) 84s.
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Intermittent breeding is associated with breeding group turnover in a cooperatively breeding bird
Oecologia, 2020Intermittent breeding, in which an adult skips a breeding opportunity, can represent a non-adaptive constraint or an adaptive response to the tradeoff between current and future reproduction. In group-living animals, the social group may also affect the frequency of reproduction, but this possibility has received little attention.
Maria G, Smith, Christina, Riehl
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THE BREEDING BIRDS OF BERMUDA.
Ibis, 1957Summary.  The Bermudas are a small group of oceanic islets 600 miles from land in the eastern North Atlantic. This paper is an attempt to define the unusual features of the ornithology based upon personal experience from 1940 to 1944 and a review of the literature.
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Ibis, 1942
Summary A brief description is given of the islands, the main habitats and their characteristic birds. Twenty per cent of the Caithness avifauna is not established in Orkney, and 32 per cent, of the Orkney breeding birds are not established in Shetland. The same species fall away much more gradually to the north in Scandinavia.
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Summary A brief description is given of the islands, the main habitats and their characteristic birds. Twenty per cent of the Caithness avifauna is not established in Orkney, and 32 per cent, of the Orkney breeding birds are not established in Shetland. The same species fall away much more gradually to the north in Scandinavia.
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Nature, 1947
THIS small book is a brief account of the changes which have taken place in the breeding birds of Denmark during the last century and a half. The Breeding Birds of Denmark With Special Reference to Changes during the Last Century. By Poul Jespersen. (Published by the Danish Section of the International Committee for Bird Preservation.) Pp.
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THIS small book is a brief account of the changes which have taken place in the breeding birds of Denmark during the last century and a half. The Breeding Birds of Denmark With Special Reference to Changes during the Last Century. By Poul Jespersen. (Published by the Danish Section of the International Committee for Bird Preservation.) Pp.
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Recovery of breeding success in wild birds
Nature, 2000We have found that the breeding success of two insectivorous forest passerines, the great tit Parus major and the pied flycatcher Ficedula hypoleuca, has markedly improved in the vicinity of a copper-smelting plant during the seven years since it reduced its emissions of heavy metals.
T, Eeva, E, Lehikoinen
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Timing of Breeding in an Ecologically Trapped Bird
The American Naturalist, 2017In human-modified environments, organisms may prefer to use habitats where their reproductive performance is lower compared to alternative options. Many such ecological traps occur in seasonally changing environments. Although the timing of breeding has been shown to impact reproductive performance in a variety of organisms, it has never been ...
Franck A, Hollander +3 more
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Scientific American, 2010
The article discusses the mapping of the domestic turkey genome by scientists at the U.S. Department of Agriculture (USDA) in an effort to help breeders produce a better quality of meat in greater and cheaper quantities.
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The article discusses the mapping of the domestic turkey genome by scientists at the U.S. Department of Agriculture (USDA) in an effort to help breeders produce a better quality of meat in greater and cheaper quantities.
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