Neogene pseudotooth birds are common along the America coasts near the Appalachian and Cordilleran mountains, and these species thus presumably also bred not far offshore or even in the mountains themselves.
As aves pseudodentadas do Neoxeno son comúns ao longo das costas americanas preto dos Montes Apalaches e montañas das Cordilleiras, e estas especies presumiblemente aniñaban non moi lonxe da costa ou mesmo nas propias montañas.