Fig. 2: The diversity, phylogenetic distribution and allometry of development periods in birds.
From: Ecology and allometry predict the evolution of avian developmental durations
a The phylogenetic distribution of incubation, fledging and total development (incubation + fledging) period across 3096 species of birds. Inset tree schematic indicates the relationships among major taxonomic groups (>20 spp.) and provides a key for the plotting symbols used throughout the figure. b, c Allometric relationships of (log-transformed) development period length (b) and (square root-transformed) incubation fraction (c) with (log-transformed) adult body mass. Lines indicate the regression slopes estimated by phylogenetic regression. Source data are provided as a Source Data file.
