Results 261 to 270 of about 74,533 (314)
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Photoperiodic Regulation of Seasonal Breeding in Birds
Annals of the New York Academy of Sciences, 2005Abstract: Day length‐dependent breeding in birds commonly occurs in spring and summer, but may occur after exposure to complex changes in day length, as for example in transequatorial migrants. More rarely, some photoperiodic birds breed when day lengths are decreasing or are short.
Peter J Sharp
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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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Vulnerability of Subarctic and Arctic breeding birds
Ecological Applications, 2017AbstractRecent research predicts that future climate change will result in substantial biodiversity loss associated with loss of habitat for species. However, the magnitude of the anticipated biodiversity impacts are less well known. Studies of species vulnerability to climate change through species distribution models are often limited to assessing ...
Anouschka R, Hof +4 more
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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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