Phylogenetic trees

Phylogenetic trees of birds were obtained from BirdTree (https://birdtree.org/), and used to calculate the phylogenetic indexes. The birdtree.org website accompanies the following studies: Jetz W, Thomas GH, Joy JB, Hartmann K, Mooers AO (2012) The global diversity of birds in space and time. Nature 491: 444-448. http://dx.doi.org/10.1038/nature11631, and Jetz W, Thomas GH, Joy JB, Hartmann K, Redding D, Mooers AO (2014) Distribution and conservation of global evolutionary distinctness in birds. Current Biology 24: 1-12. http://dx.doi.org/10.1016/j.cub.2014.03.011.