The eared nightjars are birds that are active at night, mostly known to be living in forests and scrubland areas. These eared nightjars, also known as eurostopodidae, have long wings, and their feathers have patterns of grey and brown colours. Being ground nesters, this combination of colours acts as a perfect camouflage for the eurostopodidae or eared nightjars against potential predators.

Like other nightjars, the eared nightjars (eurostopodidae) have similar structures of a nightjar. However, these particular nightjars do not have strands of hair near the beak like the owlet nightjars. With their elongated tails and extended wings, they are strong and swift when flying.

The diet of the eared nightjars principally includes flying insects, which they are able to catch while flying. Their beaks are undersized, but they can really open their mouths wide, which is an advantage and helpful in catching flying insects. Their feet are tiny and feeble, and their toes are somehow webbed.

These birds are commonly found in China, in some parts of Asia and in Australia. Usually, they do not construct nests, and the sole egg, which is white in colour, is laid on the ground. While the female incubates the egg at daytime, the male is responsible for the egg incubation at night. The eggs take about three or four weeks to hatch, and once the chick hatches, both the male and female are responsible for feeding it.

Both the male and female participate in incubating the egg, which is usually laid single. Soon after the chick hatches, it is able to walk. When the female is threatened while brooding, it tries to scare the intruder away from the eggs by spreading its wings ferociously, expanding its throat to make it swell and puff, and producing hissing sounds to scare the intruder.

Eared nightjars are known to have their diet basically being flying insects, which they catch while in flight. Mostly, these insects include beetles, moths and other such insects. The eared nightjars hunt at night and in twilight. When flying, the eared nightjar is flamboyant and graceful, and their flight may involve sessions of rest when they perch on the ground, on a tree or anywhere along their path. While flying, these birds can be able to drink water by moving smoothly just above the water while inserting their bills in the water to drink.

Despite the fact that nightjars are known to nest and lay their eggs on the ground, they use highly obscure camouflage to disguise their nest and egg. They use dry leaves, usually brownish in colour and very similar to the surroundings. With most of their body being coloured brownish to grey, they are perfectly disguisable within an environment with bare ground, leaves and so on. This type of environment is usually the common habitat for the eared nightjars. Therefore, much as it may seem that they just nest and hatch on the ground, they have an elaborate camouflage mechanism to protect their nests, themselves and their eggs.