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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Breeding behaviour of the Red Bishop (Euplectes orix): A synthesis and new observations.
Auteurs :	Thomas W. P. Friedl, Auteur
Type de document :	Article
Dans :	Vogelwarte (42(3) Februar 2004)
Article en page(s) :	178-190
Langues:	Allemand
Résumé :	This paper gives an overview of important aspects of breeding behaviour in the Red Bishop (Euplectes orix), a weaverbird with a wide distribution in Africa south of the Sahara. Territorial and courtship behaviour of males in nuptial plumage as well as behaviour of immature males and females is described in detail. Pre- and postnuptial moult, nesting sites and nests, eggs and egg-laying, rearing of nestlings, and interactions with other bird species are also described. This review thus provides a comprehensive account of Red Bishop natural history and may serve as basis for studies on sexual selection and life history evolution in this sexually dimorphic and highly polygynous species. In addition, several new observations and data are presented that were obtained during a 6-year study on a colony of individually marked Red Bishops in the Addo Elephant National Park in the Eastern Cape, South Africa. Nest heights above water or ground ranged from 20 cm to 210 cm, with a median height of 100 cm. The time delay between nest building and nest acceptance ranged from 1 to 58 days, with 8.6% of all nests being accepted more than two weeks after the nest was built. However, in most cases (76%) the time span between nest construction and first egg laid did not exceed one week, with the median being 4 days. Intraspecific nest parasitism accounted for 6.5% of all eggs laid. Return rates of adult Red Bishops were found to be 23.7% after one year, 11.4% after two years, and 5.8% or less after three and more years, with return rates of males being significantly higher than that of females. Furthermore, territorial males had significantly higher return rates than non-territorial males. The recruitment rate of young was found to be 14.9%.

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