see text Alectromorphnus Heine & Reichenow, [1890] Heterospizias Harpyhaliaetus Wetmoregyps Amplibuteo Buteogallus is a genus of birds of prey in the family Accipitridae.

All members of this genus are essentially neotropical, but the distribution of a single species extends slightly into the extreme southwestern United States.

Many of the species are fond of large crustaceans and even patrol long stretches of shore or riverbank on foot where such prey abounds, but some have a rather different lifestyle.

According to the mtDNA data, it is very closely related to the savanna hawk, which is visually dissimilar, appearing like a very light Buteogallus which has an ochre-grey coloration due to abundant pheomelanins.

Either there has been strong convergent evolution in plumage and ecology – perhaps a case of mimicry – between the white-necked and the mantled hawks, or the mtDNA data is misleading due to ancient hybrid introgression.