However, a 2021 analysis of mitochondrial genes among Accipitrimorphae, which include Cathartiformes, reinforced prior findings on the phylogenetic relationships between Cathartiformes and other subfamilies of Accipitriformes.
On the other hand, a 2021 investigation into mitochondrial DNA among Accipitrimorphae, including Cathartiformes, supported previous findings regarding the evolutionary relationships between Cathartiformes and other subfamilies within Accipitriformes.