Eurypygiformes
Bird order - The Kagu (Rhynochetidae) and Sunbittern (Eurypygidae) are removed from the Gruiformes to a new Order Eurypygiformes (Hackett et al. 2008), which (with tropicbirds Phaethontiformes) is sister to the Core Waterbird clade (Prum et al. 2015).
