The nightgligers erectile spines are formed from modified hairs that, in the course of evolution, have developed into stiff needle-like structures. The nightglider parachutes silently down on to its quarry, impaling it on its chest spines.
There are several species of nightglider.
Each is camouflaged against particular species of forest trees.
The tiny male matriarch tinamou spends entire life as a parasite on the back of a female.
The male has large claws on its feet and a single claw on each wing.