ESM Fig I from Phylogenetic and kinematic constraints on avian flight signals.

Sample phylogeny taken from 100 phylogenetic trees (Jetz et al. 2012, Nature) used in a Bayesian phylogenetic analysis of ½ wingbeat period, vocal signal period and body mass in 150 bird species. Species from vocal learner lineages are shown in red font; non-vocal learner lineages are shown in black font. Names of clades are given to the right with red lines for vocal learners, red-hashed lines for groups with and without vocal learning; black lines signify lineages without vocal learning. Bird images are scaled to size.

本示例系统发育树取自Jetz等人2012年发表于《自然》（*Nature*）的100棵系统发育树，用于针对150种鸟类的半振翅周期、鸣唱信号周期与体重开展的贝叶斯系统发育分析。鸣唱学习类群的鸟类物种以红色字体标注；非鸣唱学习类群则以黑色字体标注。演化支名称标注于图右侧：鸣唱学习类群以红色实线标注，兼具与不兼具鸣唱学习能力的类群以红色虚线标注；非鸣唱学习类群以黑色实线标注。鸟类图像已按比例缩放适配图幅。