Development syndromes in New World temperate and tropical songbirds

Suzanne Austin, W. Douglas Robinson, Tara Rodden Robinson & Robert E. Ricklefs
We studied avian development in 49 species of temperate and 153 species of tropical New World passerine birds to determine how growth rates, and incubation and nestling periods, varied in relation to other life-history traits. We collected growth data and generated unbiased mass and tarsus growth rate estimates (mass n = 92 species, tarsus n = 49 species), and measured incubation period (n = 151) and nestling period (n = 153), which we analyzed with...
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