This episode is all about the Common Loon, Gavia immer. Also known as the Great Northern Diver.
This episode is all about birds in the family Hirundinidae. These are the swallows and martins, all of which are aerial insectivores.
This episode is about the seven bird species in the family Cathartidae: the New World vultures and condors.
This episode is all about penguins—the birds of the family Spheniscidae. They're superbly adapted for a life of diving in frigid oceanic waters.
This episode is all about bird species in the genus Geococcyx: the Greater Roadrunner and the Lesser Roadrunner.