Historical biogeography modelling
We estimated ancestral states across the pigeon radiation using two different approaches: 1) Discrete-state Markov rate-based Maximum Likelihood (Mk-ML) model (Pagel, 1999; Huelsenbeck, Nielsen, & Bollback, 2003), as developed from O’Hara et al. (2019); 2) a suite of Bayesian biogeographic models as implemented in BioGeoBears (Matzke, 2013).