Least nighthawk

Least nighthawk

Least nighthawk

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Kingdom
Phylum
Class
Family
Genus
SPECIES
Chordeiles pusillus

The least nighthawk (Chordeiles pusillus ) is a species of nightjar in the family Caprimulgidae. It is found in Argentina, Bolivia, Brazil, Colombia, Guyana, Suriname, and Venezuela.

Appearance

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. The subspecies vary in size, colors, and the extent of the barring on the underparts.

Distribution

Geography

The six subspecies of least nighthawk are distributed thus. The subspecies of the two records in Argentina has not been determined.

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  • C. p. septentrionalis, eastern Colombia through northern Venezuela and Guyana into western Suriname and northern Brazil
  • C. p. esmeraldae, southeastern Colombia, southern Venezuela, and extreme northwestern Brazil
  • C. p. xerophilus, Paraíba and Pernambuco states in extreme northeastern Brazil
  • C. p. novaesi, Maranhão and Piauí states in northeastern Brazil
  • C. p. saturatus, southeastern Amazonas, southwestern Pará, and western Mato Grosso states in west-central Brazil and extreme eastern Bolivia.
  • C. p. pucillis, Tocantins, Bahia, and Goiás states in eastern Brazil

The least nighthawk typically inhabits open savanna or subtropical grassland, both cerrado and caatinga. In elevation it ranges from sea level up to about 1,000 m (3,300 ft).

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Least nighthawk habitat map
Least nighthawk habitat map
Least nighthawk
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Habits and Lifestyle

Some populations of least nighthawk appear to be migratory but the data are inconclusive.

Lifestyle
Seasonal behavior
Bird's call

Diet and Nutrition

The least nighthawk is an aerial insectivore, taking prey of many insect orders. It hunts at dawn and late in dusk and tends to stay near the ground. It hunts in solitary, in pairs, or in small loose groups. Its flight has been described as "buoyant, quick, and erratic with many sudden shifts in direction".

Mating Habits

Very little is known about the least nighthawk's breeding phenology. Its nesting season appears to vary within its range. It lays one egg directly on the ground.

Population

Population number

The IUCN has assessed the least nighthawk as being of Least Concern. It has a wide distribution, its population is thought to be stable, and no threats have been identified.

References

1. Least nighthawk Wikipedia article - https://en.wikipedia.org/wiki/Least_nighthawk
2. Least nighthawk on The IUCN Red List site - https://www.iucnredlist.org/species/22689701/131923657
3. Xeno-canto bird call - https://xeno-canto.org/706522

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