European Nightjar
Caprimulgus europaeus
The European nightjar is 24.5–28 cm (9.6–11.0 in) long, with a 52–59 cm (20–23 in) wingspan. The male weighs 51–101 g (1.8–3.6 oz) and the female 67–95 g (2.4–3.4 oz). The adult of the nominate subspecies has greyish-brown upperparts with dark streaking, a pale buff hindneck collar and a white moustachial line. The closed wing is grey with buff spotting, and the underparts are greyish-brown, with brown barring and buff spots. The bill is blackish, the iris is dark brown and the legs and feet are brown. The flight on long pointed wings is noiseless, due to their soft plumage, and very buoyant. Voice: The male European nightjar's song is a sustained churring trill, given continuously for up to 10 minutes with occasional shifts of speed or pitch. It is delivered from a perch, and the male may move around its territory using different song posts. Singing is more frequent at dawn and dusk than during the night, and is reduced in poor weather.
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
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: European Nightjar and Large-tailed Nightjar.