NETN Species Spotlight - Turkey and Black Vultures (U.S. National

NETN Species Spotlight - Turkey and Black Vultures (U.S. National Park Service)

NETN Species Spotlight - Ruffed Grouse (U.S. National Park Service)

Maryland Biodiversity Project - Turkey Vulture (Cathartes aura)

Black Vulture Audubon Field Guide

Black Vulture Fact Sheet – HawkWatch International

Outside: The soaring birds of Pennsylvania are fun to watch – Reading Eagle

Fact Finders: Attacking Missouri's black vulture problem

The Naked Vulture and the Thinking Ape - The Atlantic

Wildlife Tsankawi Guided Hike Stop 18 (U.S. National Park Service)

Turkey Vulture (Cathartes aura) - North American Birds - Birds of North America