La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Obtaining and storing House Sparrow eggs in quantity for nest-predation experiments
Auteurs :	R. M. Degraaf, Auteur ; T. J. Maier, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (72(1) WIN 2001)
Article en page(s) :	124-130
Langues:	Anglais
Résumé :	House Sparrow (Passer domesticus) eggs are useful in artificial nest experiments because they are approximately the same size and shell thickness as those of many forest passerines. House Sparrow eggs can be readily collected in quantity by providing nest boxes in active livestock barns. We collected over 1200 eggs in three years (320-567 per year) from a colony of about 24 breeding pairs by providing 60 nest boxes. Eggs dry-refrigerated at 8-9 degreesC lost mass after 2 weeks, whereas eggs submerged in sodium silicate solution at 8-9 degreesC remained fresh for 2 months until deployment. Eggs stored in sodium silicate solution should be rinsed with clean water before use.

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