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The common nighthawk lays two 6–7 g (0.21–0.25 oz) eggs per clutch; the eggs are laid over a period of 1 to 2 days. [ citation needed ] The female alone displays a brood patch . The chicks may be heard peeping in the hours before they hatch.
The female nighthawk will lay 2 clay colored eggs with gray-purple spots coating them. [2] The incubation period spans about 18 days, and the nestling phase continues for 21 days. [ 3 ] Both parents contribute with feeding their young by regurgitating food into their mouths.
The least nighthawk (Chordeiles pusillus), at 6.3 inches (15–19 cm) and 23 grams (0.81 oz), is the smallest of all Caprimulgiformes, while the Nacunda nighthawk (Chordeiles nacunda) is one of the largest nightjars in the world measuring at 11-13 inches (28–33 cm).
The female incubates the eggs during the day while both parents incubate it at night for approximately 19 to 21 days. The male is primarily in charge of protecting the nest from any predators or other intruders. the parents feed the chicks mainly insects until they are able to leave the nest in about 20 to 21 days.
Common nighthawk: Chordeiles minor (Forster, JR, 1771) 15 Antillean nighthawk: Chordeiles gundlachii Lawrence, 1857: 16 Short-tailed nighthawk: Lurocalis semitorquatus (Gmelin, JF, 1789) 17 Rufous-bellied nighthawk: Lurocalis rufiventris Taczanowski, 1884: 18 Band-tailed nighthawk: Nyctiprogne leucopyga (Spix, 1825) 19 Plain-tailed nighthawk
The Antillean nighthawk migrates out of its breeding range after raising its young. It still remains unknown where the birds spend the winter. The two eggs are laid directly on bare ground - there is no nest. Incubation is performed largely by the female and lasts for about 20 days. Young fledge at about 20 days of age.
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Nighthawk as a name has been applied to numerous places, characters, and objects throughout history. Nebraska 's state nickname was once the "Bugeater State" and its people were sometimes called "bugeaters" (presumably named after the common nighthawk ).