Taxonomy
Thomas C. Jerdon first described this species in an annotation to his 1845 treatment of the Indian Jungle Nightjar (C. indicus) in the Illustrations of Indian ornithology. Subsequently it was sometimes lumped again with C. macrurus, but the co-occurrence of this form and Large-tailed Nightjar C. macrurus without interbreeding in the northeast of the Indian peninsula was noted in 1987 suggesting their distinctness. It has since been reaffirmed by studies on vocalization and considered a full species. The subspecies in Sri Lanka is C. a. aequabilis. Jerdon's type locality mentioned as Ghauts has been considered to be the Eastern Ghats west of Nellore.
Read more about this topic: Jerdon's Nightjar