Square-tailed Nightjar was created in 1857.
Collared Nightjar was created in 1871.
Jerdon's Nightjar was created in 1845.
Mees's Nightjar was created in 2004.
Todd's Nightjar was created in 1915.
Bates's Nightjar was created in 1906.
Long-tailed Nightjar was created in 1825.
Slender-tailed Nightjar was created in 1892.
Long-trained Nightjar was created in 1850.
New Zealand Owlet-nightjar was created in 1968.
Well, most nightjar species are not endangered. HOWEVER, the Puerto Rican Nightjar was listed as endangered in 1973.
bird
neither it is a bird