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The common nighthawk is distinguished from other caprimulguids by its forked tail (includes a white bar in males); its long, unbarred, pointed wings with distinctive white patches; its lack of rictal bristles, and the key identifier – their unmistakable calls. [13] These birds range from 21 to 25 cm (8.3 to 9.8 in) in total length and from 51 ...
The common name "nightjar", first recorded in 1630, refers to the nocturnal habits of the bird, the second part of the name deriving from the distinctive churring song. [1] Caprimulgus nightjars are found around Afro-Eurasia and Australasia, and like other nightjars they usually nest on the ground. They are mostly active in the late evening and ...
Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night.
Nightjars are medium-sized nocturnal or crepuscular birds in the family Caprimulgidae / ˌ k æ p r ɪ ˈ m ʌ l dʒ ɪ d iː / and order Caprimulgiformes, characterised by long wings, short legs, and very short bills. They are sometimes called bugeaters, [1] their primary source of food being insects.
The subfamily Chordeilinae contains four genera and ten species. [4] Under the genus Chordeiles exists the greatest number of diversity in species in the subfamily with the lesser nighthawk (Chordeiles acutipennis), the Antillean nighthawk (Chordeiles gundlachii), the common nighthawk (Chordeiles minor), the nacunda nighthawk (Chordeiles nacunda), the least nighthawk (Chordeiles pusillus), and ...
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The feathers making up this disc can be adjusted to sharply focus sounds from varying distances onto the owls' asymmetrically placed ear cavities. Most birds of prey have eyes on the sides of their heads, but the stereoscopic nature of the owl's forward-facing eyes permits the greater sense of depth perception necessary for low-light hunting.
The bird usually maintains a quiet demeanor, and it is quite rare to encounter its distinctive whines or trilling calls outside of its breeding grounds. [7] Its toadlike trills can be sung in sequences lasting 7–13 seconds and can extend to over 3 minutes. Its calls sound like a low, gurgled laugh. [8]