Antillean Nighthawk
Chordeiles gundlachii
The adults are dark with brown, grey and white patterning on the upperparts and breast; the long wings are black and show a white bar in flight. The tail is dark with white barring; the underparts are white with black bars. The adult male has a white throat; the female has a light brown throat. The most distinguishing characteristic to determine its identity from its closest relative the common nighthawk are the contrasting pale tertials near the back of the wings of a sitting bird. There are two color morphs, a gray and a rufous type. Voice: The call is a short pikadik usually heard overhead. The common nighthawk occasionally will make a similar call, but it is not as consistent. In the Dominican Republic, the bird is called querebebé; in Puerto Rico, the bird is called querequequé. Both are onomatopoeic terms which originate in Taíno.
ID text from Wikipedia, CC BY-SA 4.0
Least Nighthawk
Chordeiles pusillus
The least nighthawk is 15 to 25 cm (5.9 to 9.8 in) long, making it one of the smallest species in family Caprimulgidae. Two females weighed 27.8 and 33.4 g (0.98 and 1.18 oz) The general plumage pattern is brown upperparts with gray, rufous, and buff spots, and whitish or buff underparts with brown bars. The throat has a narrow white patch or small white patches on either side of it. The four outermost primaries have a white band that is highly visible in flight. Males also have white tips on some other wing feathers. Voice: The least nighthawk's flight call has been variously described as "a low churr and a weak nasal beep or week" and as "a short, sharp whit or bit". It sings from the ground or a bush, "a fast cur-cur-cur-curry (or chu-chu-chu-chu-chuEE).
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: Antillean Nighthawk and Least Nighthawk.