Consensus phylogeny of aquatic and semi-aquatic birds (based on Hackett et al. 2008, Burleigh et al. 2015, Prum et al. 2015, Reddy et al. 2017, Kimball et al. 2019, Kuhl et al. 2021). All bird vignettes are in the public domain (https://publicdomainvectors.org).