Band-tailed nighthawk | |
---|---|
Nyctiprogne leucopyga | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Clade: | Strisores |
Order: | Caprimulgiformes |
Family: | Caprimulgidae |
Genus: | Nyctiprogne |
Species: | N. leucopyga |
Binomial name | |
Nyctiprogne leucopyga (Spix, 1825) | |
The band-tailed nighthawk (Nyctiprogne leucopyga) is a species of nightjar in the family Caprimulgidae. It is widely spread throughout northern and central South America. [2] [3] There are currently 5 subspecies. [4] They are most vocal during the night time, indicating that they are nocturnal birds. [5] They have an insectivorous diet, and feed on flying insects. Band-tailed nighthawks have an interesting reproductive strategy. Instead of building traditional nests, they lay their eggs directly on the ground, typically in concealed locations within their forested habitats. This adaptation may help reduce the chances of nest predation.
The band-tailed nighthawk was originally described by Johann Baptist von Spix in 1825 [6] .
There are currently 5 recognized subspecies of the band-tailed nighthawk [2] [3] [4] . The subspecies differ primarily in geographic location, with only subtle physical variations in size, colour and vocalizations. However, the subspecies N. l. latifascia has been suggested to be a separate species. [6] It is visually distinct from the other N. leucopyga subspecies, as its plumage is darker in colour, and there are differences in its vocalizations compared to the other subspecies. [6]
The band-tailed nighthawks is a small species, with a body length of 16.5 to 19 cm (6.5 to 7.5 in), [3] [7] [8] and a wingspan of 12.9 to 14.1 cm (5.1 to 5.6 in). [2] [9] Adults weigh from 0.023 to 0.028 kg (0.051 to 0.062 lb). The female has a larger average weight and wingspan than the male.
The bill is very wide but short, with a length of 0.9 to 0.97 cm (0.35 to 0.38 in), and is hooked at the tip. [9] It has cryptically patterned brown plumage, used to blend in with tree bark and leaves. Its wings are long with pointed wingtips, and have no white markings. [10] It has a black bill, dark brown irises, and pinkish-gray tarsus and feet. The tarsus lengths are generally short, from 1.18 to 1.24 cm (0.46 to 0.49 in). [9] Unlike many nightjar species, band-tailed nighthawks lack elongated rictal bristles. [2] [10] [11] It has white patches on either side of the throat, and a white band on the mid-tail, across its three outermost tail feathers. The tail itself is short, and somewhat forked, at 8.2 to 9.7 cm (3.2 to 3.8 in).
It has very weak sexual dimorphism, with both sexes presenting similar plumage and colouring. [10] The immature and juvenile phases are also similar to the mature adult, although are slightly more plain and paler.
The band-tailed nighthawk has a large range, although there are gaps in its distribution. [12] It is located through much of the northern parts of South America, from east of the Andes to Venezuela and central Brazil. [2] [13] It is found from northern Venezuela and eastern Colombia, east to French Guiana and eastern Brazil. Its range then extends south to northern Bolivia and northeastern Paraguay. [3] [14] It is also found in Peru, Ecuador, and Guyana. [13]
Its natural habitat is in subtropical and tropical areas located near water, along rivers, streams, marshes, and lakes. [3] These habitats include lowland forests, savannahs, grasslands, and swamps. It is only reported in areas of elevation below 200 to 300m. [2] [7] [8]
The band-tailed nighthawk is a nocturnal species, and is the most active during the late evening, early morning, and at night. During the day, it roosts near the ground in locations with dense thickets of bushes and trees. [10] The ecology and behaviour of this nighthawk is not well known, and there have been few dedicated studies [2] [5] [9]
Seasonal changes in the vocal activity of the band-tailed nighthawk has been used to determine the timing of its breeding season. [5] The breeding season begins between July and August, when the maximum singing activity occurs, and the dry season ends. The nesting period occurs between September and October, when the wet season begins and there is a high amount of food availability. There is also less vocal activity measured during this nesting period.
The nest is a shallow hole on the ground, usually in open areas with little coverage, such as gravel beaches or forest floors. [2] The nest is lined with leaves and other vegetation. The eggs are cream or white, with small dark blotches. [3]
The band-tailed nighthawk is an insectivore that feeds primarily on aerial arthropods, using a feeding method known as hawking [11] . Its diet includes beetles, ants, true bugs, and flying termites, [15] amongst other arthropods. It forages in continuous flight, with rapid, shallow wingbeats and gliding to keep it aloft. [10] It feeds mostly at dusk, when there are high amounts of flying insects.
Feeding occurs around sunset and stops once it becomes too dark for the bird to see its prey, and then occurs once more just before dawn. [2] [10] In between feeding sessions, it roosts in the same area, on thin horizontal branches close to vegetation and water. The band-tailed nighthawk roosts perpendicular to the branch, either by itself or in groups of 2-10 individuals. [10]
Few vocalizations have been recorded for the band-tailed nighthawk. [5] It has a gole-kwoik-kwak call that is at a similar pitch to a frog's ribbit, and is repeated steadily and at a low, subtle volume; [5] it is considered a territorial call.
The IUCN Red List lists the status of the band-tailed nighthawk as of Least Concern. [12] While Amazonian deforestation is predicted to cause a decrease in its population, it has a large geographic range and is a fairly common species. [2]
The common nighthawk or bullbat is a medium-sized crepuscular or nocturnal bird of the Americas within the nightjar (Caprimulgidae) family, whose presence and identity are best revealed by its vocalization. Typically dark, displaying cryptic colouration and intricate patterns, this bird is difficult to spot with the naked eye during the day. This bird is most conspicuous when in its buoyant and erratic flight. The most remarkable feature of this aerial insectivore is its small beak that belies the massiveness of its mouth. Some claim appearance similarities to owls. With its horizontal stance and short legs, the common nighthawk does not travel frequently on the ground, instead preferring to perch horizontally, parallel to branches, on posts, on the ground or on a roof. The males of this species may roost together but the bird is primarily solitary. The common nighthawk shows variability in territory size.
Jerdon's nightjar is a medium-sized nightjar species native to southern India and Sri Lanka. Formerly considered as a subspecies of the long-tailed nightjar, it is best recognized by its distinctive call which sounds like a wooden plank being beaten periodically with each note ending in a quaver. The common name commemorates Thomas C. Jerdon who described the species.
The pauraque – also called the common pauraque to distinguish it from similar species – is a nightjar species, one of two birds in the genus Nyctidromus. It breeds in the subtropical and tropical regions of the New World, and except for northernmost birds it is largely resident all year round.
The Sykes's nightjar, Sykes' nightjar, Sind nightjar or Sindh nightjar is a nightjar species found in northwestern South Asia. They are insectivorous nocturnal birds known for their sandy plumage used for camouflage and their excellent flight abilities, allowing them to catch their prey mid-air. This species has a large range with stable population size and therefore has been listed as “Least Concern” with no prediction of substantial human influence on their habitats in the near future.
The savanna nightjar, also known as allied nightjar or Franklin's nightjar, is a species of nightjar found in South and Southeast Asia. The IUCN Red List has assessed the species to be of least concern because it has a large range and its population trend is stable. As other nightjars, this nocturnal bird is characterised by its large eyes, gaping mouth and excellent camouflage. It can be distinguished from similar southasian nightjar species, like the chirruping nightjar, by its unique vocalisations.
The eared nightjars are a small group of nocturnal birds in the nightjar family, although the taxonomy is uncertain. There are seven species, mainly found in forest and scrub from China to Australia. Five species are placed in the genus Eurostopodus, the other two species in Lyncornis. They are long winged birds with plumage patterned with grey and brown to camouflage them when resting on the ground. They feed on insects caught in flight. A single white egg is laid directly on the ground and incubated by both adults. The chicks can walk soon after hatching.
The Long-tailed Nightjar is one of 98 species of nightjar in the family Caprimulgidae, the "true nightjars". It is a nocturnal, insectivorous bird characterized by its distinctive long tail. It is found throughout mainland Africa in open areas, arid semi-deserts, and savannas, with common sightings alongside roadways.
The band-winged nightjar or greater band-winged nightjar is a species of nightjar in the family Caprimulgidae. It is widespread in South America, where it is found in the Andes, Venezuelan Coastal Range, Santa Marta Mountains, Tepuis, most of Chile, Argentina, Paraguay, Uruguay, and eastern Brazil. It occurs in a wide range of habitats, from the edge of humid montane forests to shrubby semi-deserts and urban rooftops.
The large-tailed nightjar is a species of nightjar known for its distinctive long, broad tail and cryptic plumage that allows it to blend into its surroundings. Found along the southern Himalayan foothills, eastern South Asia, Southeast Asia and northern Australia, its natural habitats are subtropical or tropical moist lowland forest, subtropical or tropical mangrove forest, and subtropical or tropical moist montane forest.
The fiery-necked nightjar is a species of nightjar in the family Caprimulgidae, which is found mostly in Africa south of the equator, though it has been spotted in a few countries north of the equator. It is most often found in woodland savannas or other deciduous woodlands. It is usually distinguished by its tawny coloured collar which gives the species its common name. It has a distinctive call that many have rendered as 'good-lord-deliver-us'. The fiery-necked nightjar is an insectivorous species that mostly eats butterflies, moths and other insects. The fiery-necked nightjar breeds after the dry season and typically produce two clutches with two eggs per clutch.
The sand-colored nighthawk is a species of nightjar in the family Caprimulgidae. It is found in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela.
The white-winged nightjar is a species of nightjar in the family Caprimulgidae. It is found in Bolivia, Brazil and Paraguay.
The spotted nightjar or spotted eared-nightjar is a species of nightjar in the family Caprimulgidae. It inhabits much of mainland Australia and has also been found in several Indonesian islands. Its natural habitats are open forests and woodlands, scrub, spinifex and tussock grassland, savannah woodland and mangroves.
The great eared nightjar 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. It has a white throat band but has no white on its wings or on its tail.
The rufous-bellied nighthawk, sometimes also Taczanowski's nighthawk, is a species of nightjar in the family Caprimulgidae. It is found in Bolivia, Colombia, Ecuador, Peru, and Venezuela.
The short-tailed nighthawk is a species of nightjar in the family Caprimulgidae. It is found in Mexico, in every Central American country except El Salvador, in Trinidad and Tobago, and in every mainland South American country except Chile and Uruguay.
The ocellated poorwill is a species of nightjar in the family Caprimulgidae. It is found in Argentina, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Honduras, Nicaragua, Paraguay, and Peru.
The plain-tailed nighthawk is a species of nightjar in the family Caprimulgidae. It is endemic to Brazil. Its natural habitat is dry savanna. It is threatened by habitat loss. The Plain-tailed was given its name due to the lack of bands on its tail. Other names it was given include "Bahia Nighthawk" and "Caatinga Nighthawk" although not completely inappropriate due to the fact that they are not only found specifically in those areas.
The lyre-tailed nightjar is a species of nightjar in the family Caprimulgidae. It is found in Argentina, Bolivia, Colombia, Ecuador, Peru, and Venezuela.
Todd's nightjar is a species of nightjar in the family Caprimulgidae. It is found in Brazil, Colombia, Guyana, and Venezuela.