Fiery-necked Nightjar
Caprimulgus pectoralis
An adult fiery-necked nightjar is relatively small measuring between 23 and 25 centimeters. Their plumage is mostly a variegated grayish-brown and brownish-white colour. The fiery-necked nightjar has a distinct rufous collar, which are tawny coloured feathers located at the back of the neck, giving the species its common name. They have a large white throat patch. The feathers around their eyes and at their shoulders are chestnut brown. They have a light colored crown at the top of their head with a darker spot at the center. Black spots run down on either side the scapulas. Voice: The fiery-necked nightjar is best known for its very distinctive song. It consists of a series of mellow notes that many say sounds like "Good Lord, deliver us deliver us deliver us". This song is often preceded by a wind-up call. However, they can sometimes sing this wind-up call for a very long period and never switch to the full song.
ID text from Wikipedia, CC BY-SA 4.0

Large-tailed Nightjar
Caprimulgus macrurus
The large-tailed nightjar measures approximately 31.5 to 33 cm in length. The cryptic plumage and colouration of large-tailed nightjars provide effective camouflage within its natural habitat. Males exhibit distinctive markings, characterized by a pale crown with a dark median stripe. A prominent row of black scapular feathers, bordered by broad buff or whitish-buff fringes, enhances their striking appearance. Additionally, males possess a white throat patch and along, broad brown tail marked with uneven dark bars. Voice: Songs can be heard year-round, but vocal activity may vary depending on breeding activity, population density, and moon phase. The large-tailed nightjar has a distinctive, monotonous song that it uses to assert its territory. Territorial songs are typically given by males, but there are also reports of females giving these songs.
ID text from Wikipedia, CC BY-SA 4.0

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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Fiery-necked Nightjar and Large-tailed Nightjar.