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The common nighthawk resembles both the Antillean nighthawk and the lesser nighthawk and occurs at least seasonally in the entire North American range of both of these species. The lesser nighthawk is a smaller bird and displays more buffy on the undertail coverts , where the common nighthawk shows white.
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 ...
Species that live in the far north, such as the European nightjar or the common nighthawk, migrate southward with the onset of winter. Geolocators placed on European nightjars in southern England found they wintered in the south of the Democratic Republic of the Congo. [9] Other species make shorter migrations. [8]
The 2014 State of the Birds Report lists the nighthawk as a "common bird in steep decline." A leading hypothesis for the change in nighthawks is a decline in the insect population.
Crepuscular birds include the common nighthawk, barn owl, [19] owlet-nightjar, chimney swift, American woodcock, spotted crake, white-breasted waterhen, [20] European nightjars, [8] and common buzzards. [21] Many moths, beetles, flies, and other insects are crepuscular and vespertine.
Endangered: The species is facing an extremely high risk of extinction in the wild. VU: Vulnerable: ... Common nighthawk, Chordeiles minor LC; Common poorwill, ...
While Parker birds for fun in Maine, for work he monitors two migratory bird species, the Eastern whippoorwill and the common nighthawk, one of the longest distance migratory birds in North America.
In December 2019, the International Union for Conservation of Nature (IUCN) listed 8460 least concern avian species. [1] Of all evaluated avian species, 76.9% are listed as least concern.