La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Biparental incubation pattern of the Black-necked Crane on an alpine plateau (2017)
Auteurs :	Lixun Zhang, Auteur ; Meilin Shu, Auteur ; Bei An, Auteur ; Changming Zhao, Auteur ; Yila Suo, Auteur ; Xiaojun Yang, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (158(3) 2017/07/01)
Article en page(s) :	697-705
Langues:	Anglais
Résumé :	The biparental incubation model is an excellent one for investigating how parents resolve sexual conflict and achieve cooperation, especially in cold alpine environments. We used video monitoring of 20 nests 24 h/day to systematically investigate the incubation pattern of the Black-necked Crane (Grus nigricollis), a biparental waterbird with threatened status (International Union for Conservation of Nature vulnerable status), inhabiting the Qinghai-Tibetan Plateau, China. Analysis of 3886 h of video recordings indicated high nest attendance (90.1%) by Black-necked Crane parents across 14 nests, with almost equal female and male nest attendance (45.4 vs. 44.8%). The average length of an incubation bout was 2.06 h, with frequent changeovers (10.87 times/day, lasting on average 5.05 min). Males spent significantly more time returning to the nest than females (5.57 vs. 4.65 min, t180 = −46.61, P
En ligne :	https://link.springer.com/article/10.1007/s10336-017-1439-6

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