La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	A new method for sexing Oriental White Storks
Auteurs :	Seokwan Cheong, Auteur ; Ha-Cheol Sung, Auteur ; Shi-Ryong Park, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (78(3) SEP 2007)
Article en page(s) :	329-333
Langues:	Anglais
Résumé :	For species where males and females are monomorphic, or nearly so, determining the sex of individual birds generally requires either capturing birds or collecting samples, such as feathers, for DNA analysis. We developed a new method, involving the use of photographs, to determine the sex of endangered Oriental White Storks (Ciconia boyciana). Using photographs, we analyzed the lateral features of the heads of 25 captive storks of known sex (12 males and 13 females) and found differences between males and females in the distance from the bill tip to the nape and the distance from the bill tip to the commissural point. These differences were used to generate a discriminant function that was then tested on 22 captive storks at Hyogo Homeland Park (Toyooka, Japan), and we correctly determined the sex of

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