La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Heterospecific intrusions, synchronous fleeing, and nest attendance in a weaverbird colony (2015)
Auteurs :	Bobby Habig, Auteur ; David C. Lahti, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (156(2) 2015/01/13)
Article en page(s) :	551-555
Langues:	Anglais
Résumé :	Synchronous fleeing (i.e. “dreads” or “panic flights”) is a frequently observed but rarely quantified behaviour in colonial birds. Here we analyse video recordings to assess synchronous fleeing behaviour in a Village Weaver (Ploceus cucullatus) colony. Our results indicate that intrusions by heterospecific avian species are frequent and create significant daily differences in female nest attendance. Overall, different sizes, masses and species of intruding heterospecifics appear to affect weaver nesting similarly. Our findings suggest that in colonial birds, with the advantage of “many eyes”, a rapid response to a potential threat nevertheless comes at the apparent cost of many “false alarms”.
En ligne :	http://link.springer.com/article/10.1007/s10336-014-1144-7

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