La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Behavioural patterns in the Southern Bald Ibis (Geronticus calvus) at breeding sites
Auteurs :	Grzegorz Kopij, Auteur
Type de document :	Article
Dans :	Vogelwarte (39(4) Dec., 1998)
Article en page(s) :	248-263
Langues:	Allemand
Résumé :	The Southern Bald Ibis behavioural patterns and their daily and seasonal frequency of performance were analysed in a breeding colony in the eastern Free State, South Africa. This species behaviour is characterised by varied and often performed breeding displays and comfort movements. The breeding displays were performed more often by non-breeding pairs than by breeding birds. Much higher copulation rates among non-breeding than among breeding pairs and low frequency of extra-pair copulation has been noted. On general, displays were performed more often in the early breeding season, and on daily basis, mainly in the morning and in late afternoon. All comfort movements are of universal occurrence and basically have the same form and context as in other bird species, with preening movements being most often performed and most complex in function.

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