noun. mainly crepuscular or nocturnal nonpasserine birds with mottled greyish-brown plumage and large eyes; feed on insects.
- Phalaenoptilus nuttallii
- European nightjar
- Caprimulgus carolinensis
- Caprimulgus vociferus
- mosquito hawk
- caprimulgiform bird
- European goatsucker
- family Caprimulgidae
Example sentences of the word nightjar
1. Noun, singular or mass
The whip-poor-will (Caprimulgus vociferus), also known as the nightjar, is common in the Eastern United States during the summertime.
The western nightjar known as the common poorwill whistles its name at night.
An untrained ear could possibly confuse these nightjar songs for a screech-owl's, but it’s easy to learn to distinguish them.