Sickle-billed vanga

Last updated

Sickle-billed vanga [1]
Sickle-billed Vanga, Ankarafantsika National Park, Madagascar.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Vangidae
Genus: Falculea
I. Geoffroy Saint-Hilaire, 1836
Species:
F. palliata
Binomial name
Falculea palliata

The sickle-billed vanga (Falculea palliata) is a species of bird in the vanga family Vangidae. It is monotypic within the genus Falculea. It is endemic to Madagascar. Its natural habitats are tropical dry forests and tropical dry shrubland.

Contents

Taxonomy

The sickle-billed vanga was described by Isidore Geoffroy Saint-Hilaire in 1836, who also erected the genus Falculea to place it in. There are no subspecies. Like many members of the vanga family it was previously placed in another family by early scientists. In the case of this species it was placed with the crows and jays in Corvidae by H. Gadow in the 1883 Catalogue of the British Museum. [3] Within the Vangidae it seems that the closest relatives are the Bernier's vanga (Oriolia bernieri), the white-headed vanga (Artamella virdis) and the three species in the genus Xenopirostris . It is thought that the sickle-billed vanga split from the white-headed vanga around 1.1 million years ago. The two species share similar plumage but are very different in size and bill shape, reflecting the wide plasticity in body shape and feeding ecology in the vanga radiation. Both species, as well as their other close relatives, also share a unique intense black colouration in the mouth. [4]

Description

The sickle-billed vanga is the largest of the vangas, measuring 32 cm (13 in) in length and weighing 106 to 119 g (3.7–4.2 oz). The most striking feature is the bill, which is strongly decurved and measures 77 mm (3.0 in) and is blue-grey fading to ivory at the tip. The plumage is striking, with a white head, breast and belly and the back, wings and tail being black with a blue sheen. The iris is brown and the orbital ring around the eye is black. The legs are strong and coloured dark grey to pale blue. There is no sexual dimorphism. Juveniles are similar to adults but the black feathers on the back and wings are tipped with buff. [4]

Distribution and habitat

Andohahela National Park is one of many national parks that holds the sickle-billed vanga Andohahela NP.jpg
Andohahela National Park is one of many national parks that holds the sickle-billed vanga

The sickle-billed vanga is endemic to Madagascar, where it is found throughout the western side of the island. It ranges from sea-level up to 900 metres (3,000 ft). It is found in dry deciduous forest as well as thorn-forest. It can also be found in open savanna and in wooded areas around villages. The species is non-migratory. [4]

The species is common within its range and is protected by a number of national parks, including Andohahela National Park, Ankarafantsika National Park, and Berenty Reserve. As such it is evaluated as Least Concern by the IUCN. [4]

Behaviour

Diet and feeding

The sickle-billed vanga is a social species, particularly in the tiding flea season when it can travel in groups of up to thirty birds while foraging for food and form roosting groups of over fifty birds. These flocks become smaller during the breeding season, but retain a small group of non-breeders that forage together over a wide area. They will form mixed-species foraging flocks with the related white-headed vanga and the crested drongo. The species feeds on a wide range of terrestrial invertebrates, including spiders, cockroaches, crickets, beetles, and worms. Small vertebrates, including chameleons and geckos, are also part of the diet and are also fed to nestlings. They generally feed in trees and particularly favour large branches, and will probe their long bill deep into holes and use it to lever off bark to get at concealed prey, occupying part of the niche usually filled by woodpeckers, which are absent from Madagascar (they do not fully fill the niche as they do not hammer the wood for prey). [4]

Breeding

The sickle-billed vanga is apparently a seasonal breeder, with the season running from October to January in Ankarafantsika National Park in the north western part of the island. This coincides with the end of the dry season. The species is one of the vangas that has a polyandrous breeding system, where one female will mate with two or more males and all are responsible for raising the young. It is the female that engages in courtship displays, approaching the male and quivering her wings while holding the body in a horizontal posture. The male does not perform any display in return. Sickle-billed vangas are territorial and the males in the group will defend the territory from rivals and from potential or actual predators. [4]

The nest is atypical for the family, consisting of a large untidy bowl of twigs, 30–40 centimetres (12–16 in) in diameter, situated 9–16 metres (30–52 ft) off the ground in the fork of a tree. The inner structure is lined with more delicate material. It is constructed by both sexes, but more work is done by the female. The clutch consists of three or four eggs, which are creamy white with mottling (particularly towards the larger end of the egg). Both sexes incubate the eggs, and feed and brood the chicks, but as with nest construction the female does more of the work than the males. The incubation period is 16 to 18 days, and chicks fledge after 19 to 23 days. [4]

Related Research Articles

<span class="mw-page-title-main">Vanga</span> Family of birds

The family Vangidae comprises a group of often shrike-like medium-sized birds distributed from Asia to Africa, including the vangas of Madagascar to which the family owes its name. Many species in this family were previously classified elsewhere in other families. Recent molecular techniques made it possible to assign these species to Vangidae, thereby solving several taxonomic enigmas. The family contains 40 species divided into 21 genera.

<span class="mw-page-title-main">Bushshrike</span> Family of birds

The bushshrikes are smallish passerine birds. They were formerly classed with the true shrikes in the family Laniidae, but are now considered sufficiently distinctive to be separated from that group as the family Malaconotidae, a name that alludes to their fluffy back and rump feathers.

<span class="mw-page-title-main">Australian mudnester</span> Family of birds

Corcoracidae is a family of passerine birds known as the Australian mudnesters. The family has sometimes been called Struthideidae in the past; however, despite Struthideidae being an older name than Corcoracidae, the latter name takes precedence. It contains just two species in two genera, the white-winged chough and the apostlebird. Both are endemic to Australia.

<span class="mw-page-title-main">Kittlitz's plover</span> Species of bird

Kittlitz's plover is a small shorebird in the family Charadriidae that breeds near coastal and inland saltmarshes, sandy or muddy riverbanks or alkaline grasslands with short vegetation. It is native to much of Sub-Saharan Africa, the Nile Delta and Madagascar. It is thought to be mainly polygamous and has monomorphic plumage.

<span class="mw-page-title-main">Helmet vanga</span> Species of bird

The helmet vanga is a distinctive-looking bird of the vanga family, Vangidae, and is classified in its own genus, Euryceros. It is mainly blue-black, with rufous wings and a huge arched blue bill. It is restricted to lowland and lower montane rainforests of northeastern Madagascar. Its diet is composed of invertebrates, predominantly insects. The species is threatened by habitat loss.

<span class="mw-page-title-main">White-fronted plover</span> Species of shorebird of the family Charadriidae from Sub-Saharan Africa and Madagascar

The white-fronted plover or white-fronted sandplover is a small shorebird of the family Charadriidae that inhabits sandy beaches, dunes, mudflats and the shores of rivers and lakes in sub-saharan Africa and Madagascar. It nests in small shallow scrapes in the ground and lays clutches of one to three eggs. The species is monogamous and long-lived, with a life expectancy of approximately 12 years. The vast majority of pairs that mate together stay together during the following years of breeding and retain the same territory. The white-fronted plover has a similar appearance to the Kentish plover, with a white fore crown and dark bands connecting the eyes to the bill.

<span class="mw-page-title-main">Wattled starling</span> Species of bird

The wattled starling is a nomadic resident bird in eastern and southern Africa. It is a species of grassland, open woodland, and cultivation.

<span class="mw-page-title-main">Madagascar plover</span> Species of bird

The Madagascar plover, also known as the black-banded plover, is a small monogamous shorebird in the family Charadriidae, native to western Madagascar. It inhabits shores of lagoons, coastal grasslands, and breeds in salt marshes. These plovers mainly nest in open grassland and dry mudflats surrounding alkaline lakes. The species is classified as vulnerable by the IUCN because of its low breeding success, slow reproductive rate, and weak adaptation to increasing habitat loss, leading to declining population numbers.

<span class="mw-page-title-main">Madagascar hoopoe</span> Species of bird endemic to Madagascar

The Madagascar hoopoe is a species of hoopoe in the family Upupidae. It was previously considered a subspecies of the hoopoe, but was split due to its vocalisations and small differences in plumage. Some taxonomists still consider all three species conspecific. Some authorities also keep the African and Eurasian hoopoe together, but split the Madagascar hoopoe. It is endemic to Madagascar, where its natural habitat is subtropical or tropical dry forest. It is a common bird and the International Union for Conservation of Nature considers its conservation status to be of least concern.

<span class="mw-page-title-main">Margaret's batis</span> Species of bird

Margaret's batis or Boulton's batis, is a species of small passerine bird in the wattle-eyes family, Platysteiridae. It is found in south western central Africa.

<span class="mw-page-title-main">Senegal batis</span> Species of bird

The Senegal batis is a species of small passerine bird in the wattle-eyes family, Platysteiridae. It occurs in western Africa where it is found in dry savanna and subtropical or tropical dry shrubland. It was originally given the binomial name Muscicapa senegalensis by Carl Linnaeus in 1766.

<span class="mw-page-title-main">Madagascar magpie-robin</span> Species of bird

The Madagascar magpie-robin is a species of chat in the Old World flycatcher family, Muscicapidae.

<span class="mw-page-title-main">Madagascar blue vanga</span> Species of bird

The Madagascar blue vanga is a bird species in the family Vangidae. It is found in Madagascar, where its natural habitats are subtropical or tropical dry forest and subtropical or tropical moist lowland forest.

<span class="mw-page-title-main">Chabert vanga</span> Species of bird

The chabert vanga, also erroneously called "Chabert's vanga", is a species of bird in the family Vangidae. It is monotypic within the genus Leptopterus. The chabert vanga is the smallest bird in the vanga family when compared to the white-headed vanga and the blue vanga. Their biometrics are typically 14 centimeters in length and their weight ranges from 17 to 26.5 grams.

<span class="mw-page-title-main">Crossley's vanga</span> Species of bird

Crossley's vanga, also known as Crossley's babbler-vanga, Crossley's babbler, Madagascar groundhunter, or Madagascar groundjumper, is a bird species in the family Vangidae.

<span class="mw-page-title-main">Malagasy paradise flycatcher</span> Species of bird

The Malagasy paradise flycatcher is a species of bird in the family Monarchidae. It is found in Comoros, Madagascar, and Mayotte. Its natural habitats are subtropical or tropical dry forest and subtropical or tropical moist lowland forest.

<span class="mw-page-title-main">Van Dam's vanga</span> Species of bird

Van Dam's vanga is a species of bird in the family Vangidae. It is endemic to Madagascar.

<span class="mw-page-title-main">Lafresnaye's vanga</span> Species of bird

Lafresnaye's vanga is a species of bird in the vanga family Vangidae. The species is monotypic and one of three species in the genus Xenopirostris. It is endemic to the south and south west of Madagascar. It inhabits sub-arid thorn scrub, in the Madagascar spiny forests ecoregion, particularly areas with large amounts of dead wood, from sea level to 100 m (330 ft). The species has a small range is not common within that range. It was uplisted from Least Concern to Near Threatened in 2022 as it is experiencing moderately rapid population decline owing to habitat degradation and loss within its range.

The rufous-bellied helmetshrike or Gabon helmetshrike is a passerine bird belonging to the Vanga family, Vangidae. It inhabits tropical forest in Central Africa. It is sometimes included within the chestnut-bellied helmetshrike of West Africa.

References

  1. Gill, F.; Donsker, D., eds. (2011). "Batises to Shrikes". IOC World Bird Names (version 2.10). Archived from the original on 13 February 2009. Retrieved 14 November 2011.
  2. BirdLife International (2016). "Falculea palliata". IUCN Red List of Threatened Species . 2016: e.T22708041A94147116. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22708041A94147116.en . Retrieved 12 November 2021.
  3. Yamagishi, Satoshi; Honda, Masanao; Eguchi, Kazuhiro; Thorstrom, Russel (2001). "Extreme Endemic Radiation of the Malagasy Vangas (Aves: Passeriformes)". Journal of Molecular Evolution. 53 (1): 39–4. Bibcode:2001JMolE..53...39Y. doi:10.1007/s002390010190. PMID   11683321. S2CID   11430161.
  4. 1 2 3 4 5 6 7 Rocamora, Gérard; Yeatman-Berthelot, Dosithée (2009). "Family Vangidae (Vangas)". In del Hoyo, Josep; Elliott, Andrew; Christie, David (eds.). Handbook of the Birds of the World. Volume 14: Bush-shrikes to Old World Sparrows. Barcelona: Lynx Edicions. pp. 142–170. ISBN   978-84-96553-50-7.