The great curassow is a 36-inch tall, hearty bird. All great curassows have a peak of forward-curling feathers on their heads, and long tails. While the range of the great curassow extends from southern Mexico to western Ecuador, their habitat is usually limited to national parks and reserves. Deforestation of tropical forests is the major threat to the survival of the great curassow. Humans are a direct threat to the great curassow because the local inhabitants hunt them for food. Besides humans, snakes are also their predators.