Vivid birds do not initiate flight sooner despite their potential conspicuousness

作     者：Nicholai M. HENSLEY Jonathan P. DRURY Theodore GARLAND, Jr. Daniel T. BLUMSTEIN 

作者机构：Department of Ecology Evolution and Marine Biology University of Califomia Santa Barbara CA USA Department of Ecology and Evolutionary Biology University of California Los Angeles CA 90095-1606 USA Institude de Biologie de I'ENS 46 Rue d'Ulm 75005 Paris France Department of Biology University of California Riverside CA 92521 USA 

出 版 物：《Current Zoology》 (动物学报（英文版）)

年 卷 期：2015年第61卷第4期

页      面：773-780页

核心收录：

学科分类：0710[理学-生物学] 070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：We thank Kate Rose for help managing data  the survey participants for judging vividness  C. East- wood for his intellectual contributions  and Bill Cooper and one anonymous reviewer for their constructive comments on a previous version of this MS. NMH was supported by the UC Regents Special Fellowship. JPD was supported by a National Science Foundation (NSF) Graduate Research Fellowship and a fellowship from the UCLA Graduate Division during the course of this study. DTB is supported by NSF-DEB-1119660 

主　　题：Antipredator behavior Body size Coloration Comparative method Conspicuousness Flight Initiation Distance 

摘      要：The distance from an approaching threat at which animals initiate flight - flight-initiation distance （FID） -- is a sensitive metric of variation in risk, but the effects on FID associated with the risk of possessing highly detectable external coloration are unknown. We tested whether variation in the degree of plumage vividness in birds explained variation in flight-initiation distance. After controlling for body mass, the distance at which the experimental approach began, and phylogenetic relatedness, plumage vividness was not a predictor of FID. Contrary to the expectation that vividness affects risk, and therefore risk assess- ment, these results suggest that birds do not compensate for greater visual conspicuousness by fleeing sooner from approaching threats [Current Zoology 61 （4）： 773-780, 2015].