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The eyes are large, even larger than those of nightjars. As in many species of nocturnal birds, they reflect the light of flashlights. [14] Their eyes, which could be conspicuous to potential predators during the day, have unusual slits in the lids, [15] which allow potoos to sense movement even when their eyes are closed.
The common nighthawk or bullbat (Chordeiles minor) is a medium-sized [3] [4] crepuscular or nocturnal bird [3] [5] of the Americas within the nightjar (Caprimulgidae) family, whose presence and identity are best revealed by its vocalization.
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.
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.
Strisores (/ s t r aɪ ˈ s oʊ r iː z / stry-SOH-reez [3]), sometimes called nightbirds, is a clade of birds that includes the living families and orders Caprimulgidae (nightjars, nighthawks and allies), Nyctibiidae (potoos), Steatornithidae (), Podargidae (), Apodiformes (swifts and hummingbirds), as well as the Aegotheliformes (owlet-nightjars) whose distinctness was only recently realized.
"The hawk is a magnificent bird, soaring up on the warm air currents and rising above to gain a perspective over the whole landscape," he describes. "It delights me every time I see a hawk."
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 great eared nightjar (Lyncornis macrotis) is a species of nightjar in the family Caprimulgidae.It is found in southwest India and in parts of Southeast Asia.This very large nightjar has long barred wings, a barred tail and long ear-tufts which are often recumbent.