More detailed comparisons of angles between ontogenetic shape trajectories suggest the black jacobin (the hummingbird species of the two included here that includes the earliest immatures) and the chicken ( Gallus gallus ), exhibit similar ontogenetic shape trajectories and significant or near-significant differences in ontogenetic trajectory from most of the remaining strisoreans (electronic supplementary material, table S3).
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Craniofacial development illuminates the evolution of nightbirds (Strisores).
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