Phylogenetic ANOVA of drivers of molt and dichromatism in feather regions
Identifying those feather regions being replaced by the prealternate molt can provide clues as to why this molt evovles To investigate how migratory distance interact with molts and dichromatism within individual feather regions, we conducted a phylogenetic-controlled analysis of variance (ANOVA), for each feather region using the package phytools (Revell 2012) in R. We investigated the influence of migratory distance on prealternate molt within feather regions by comparing these continuous characters to presence and absence of prealternate molt (Fig. 2g). We then conducted Holm’s sequential Bonferroni post-hoc tests on the phylogenetic ANOVA results to correct for simultaneous test runs.