Developmental stress impairs song complexity but not learning accuracy in non-domesticated zebra finches (Taeniopygia guttata)

By R. Zann, E. Cash. Behavioral Ecology and Sociobiology, 2007

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Chapter 5 Vocal Performance and Sensorimotor Learning in Songbirds (2009, background): “Of key relevance here is emerging evidence that stressed birds appear to develop songs with lower levels of performance, for example, lower song output, reduced note or song duration, or lower consistency (Buchanan et al., 2003; Dreiss et al., 2008; Gorissen et al., 2005; Holveck et al., 2008; Zann ”
Song complexity correlates with learning ability in zebra finch males. (2008, background): “A series of recent experimental studies has confirmed the detrimental effects of developmental stress on song complexity and the brain structures underlying song learning (Buchanan et al. 2003, 2004; Spencer et al. 2003, 2004, 2005a, b; MacDonald et al. 2006; Soma et al. 2006; Zann & Cash 2008; bu”
Accuracy of song syntax learning and singing consistency signal early condition in zebra finches (2008, background): “Interestingly, the average number of different element categories that is an aspect of repertoire size and complexity, parameters of foremost interest in sexual selection studies on male birdsong, was not affected, thereby replicating the effects of other experimental stressors on element repertoire”