Extended Data Fig. 3: Different habitats support different numbers of structurally coloured species.
From: Transitions between colour mechanisms affect speciation dynamics and range distributions of birds
Bars show number of species with pigment-based colouration (dark blue), iridescent structural colouration (pink), and non-iridescent structural colouration (gold) in different habitats. Numbers to right of bars are proportions of species in that habitat with either form of structural colouration (that is, ISC or NISC). Habitat bars sharing similar superscript letters are not significantly different in proportions of overall numbers of structurally coloured species (two-sided phylogenetic GLM, P < 0.05, phylogenetic signal = 0.026).
