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Journal ArticleDOI

Supplementary notes on the biology of the large biros of prey of embu district, kenya colony

Leslie H. Brown
- 03 Apr 2008 - 
- Vol. 97, Iss: 1, pp 38-64
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TLDR
The fluctuations of population in an area of 146 square miles in Embu district, where a census of eagles was carried out in 1950, are described and discussed and the inter-relations of various species are discussed.
Abstract
Summary. 1  The present paper is supplementary to that in ‘Ibis’ 94 and 95. 2  The fluctuations of population in an area of 146 square miles in Embu district, where a census of eagles was carried out in 1950, are described and discussed fur 951–52. 3  The inter-relations of various species are discussed, particularly for Aquila wahlbergi and Lophaetus occipitalis. 4  General accounts of breeding biology are given for Sagittarius serpentarius, Aquila wahlbergi, Hieraaetus ayresi and Terathopius ecaudatus, and supplementary data for Aquila verreauxi, Hieraaetus spilogaster, Polemaetus bellicosus, Stephanoaetus coronatus, Lophaetus occipitalis, Circaetus cinereus and Circaetus pectoralis. These accounts are given under the following heads:— 1  General notes on adults. 2  Nests and nest-building. 3  The incubation period. 4  The fledging period: (a) general, (b) development of the young, (c) parental behaviour, (d) food. 5  The post-fledging period. 5  Special problems of breeding biology are discussed under the following heads: (1) Display; (2) Eagle-weaver-bird nesting-associations; (3) Feeding rates of female and eaglet; (4) Breeding seasons; (5) Breeding success and replacement rate.

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Journal ArticleDOI

Patterns of growth in birds

TL;DR: In this article, the authors analyzed 105 species of birds of many taxonomic groups from a wide range of geographical localities and found that the shape of the growth curve is not related to the mode of development (i.e. whether precocial or altricial).
Journal ArticleDOI

Interspecific Territories of Birds

Gordon H. Orians, +1 more
- 01 Oct 1964 - 
TL;DR: It is suggested that Darwinian selection at the level of the individual permits an understanding of the known structure of avian communities and that there is no need at present to invoke new selective mechanisms at thelevel of the community or ecosystem.
Journal ArticleDOI

Parental Care and Feeding Ecology of Golden Eagle Nestlings

TL;DR: The division of labor between the sexes of Golden Eagles during breeding is quantified and these activities to the food consumption of nestlings are related to theories of sexual size dimorphism and parental investment.
Journal ArticleDOI

Observations on some kenya eagles

L. H. Brown
- 28 Jun 2008 - 
TL;DR: The continuation of work on eagles in Embu district, Kenya, especially at Eagle Hill, which has now been under observation continuously since 1949, is described and possible life spans in the wild state of adults of H. dubius and S. coronatus are suggested.