同步信息
发表于 2025-3-25 03:23:34
Gisela Osterholdn within communities (e.g., Karr and James, 1975; Baker, 1979). An especially interesting aspect of ecomorphology is the examination of adaptive radiation of genera within families, since genera should be both systematic as well as ecological units (Inger, 1958; lilies, 1970; Leisler, 1980).
最后一个
发表于 2025-3-25 08:24:08
Gisela Osterholdns of singing behavior. Similarly, many researchers have hypothesized ways in which sexual selection may favor birds that have larger song repertoires. The purposes of this paper are to (1) review the distribution of song repertoires in passerine birds and (2) review the numerous hypotheses that hav
AIL
发表于 2025-3-25 12:33:20
Gisela Osterholdcuracy and utility, illustrate how these methods have been applied, and clarify how they satisfy operational and conceptual definitions of body condition. The result will be to provide a primer for researchers interested in obtaining condition estimates, as well as for those wishing to improve upon
Jargon
发表于 2025-3-25 16:36:58
ant application to disciplinesoutside of ornithology. .Current Ornithology. aims to provide anaccessible, up-to-date, accurate source of data and to contribute toconceptual generalization and unification across the biologicalsciences.978-1-4757-9921-7
AGOG
发表于 2025-3-25 22:28:52
highly precocial young secure their own food. This pattern of development has had important consequences for mating systems in waterfowl. The relative independence of young has resulted in the liberation of males from parental care in most migratory ducks. Theory suggests that such emancipation wou
Trypsin
发表于 2025-3-26 00:53:43
Gisela Osterholdte latitudes to the tropics in particular, remains one of the great challenges to ecology. The extreme diversity of plant and animal species in some tropical habitats, compared to those of the temperate zone, have inspired evolutionary biologists since Darwin and Wallace (Wallace, 1878; Dobzhansky,
微粒
发表于 2025-3-26 06:30:54
Gisela Osterhold outside the breeding season, the role of predation in limiting numbers, and the evolution of prolonged incubation periods. Authors are based in Belgium, the United Kingdom, and the United States. Is there evidence for wholesale population declines in North Ameri can birds? Robert Askins says yes,
令人不快
发表于 2025-3-26 11:49:36
Gisela Osterholdher taxa, and communities and the corresponding variation in their ecology. Few biologists would deny there are differences between organisms that are related to differences in their ecology. Going beyond a naive inspection of the living world and pursuing a more scientific approach to the subject m
Introvert
发表于 2025-3-26 16:40:41
Gisela Osterholdnd showy plumage, bird song has been extensively studied as a model of avian sexual selection. There has now accumulated much experimental evidence, from both field and laboratory studies, that song functions to attract mates and to repel competitors from territories (Kroodsma and Byers, 1991; Searc
debouch
发表于 2025-3-26 19:39:34
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