Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Cladus: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Euornithes
Cladus: Ornithuromorpha
Cladus: Ornithurae
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Cladus: Telluraves
Cladus: Australaves
Ordo: Passeriformes
Subordo: Passeri
Parvordo: Corvida
Superfamilia: Corvoidea
Familia: Vangidae
Genus: Falculea
Species: Falculea palliata
Name
Falculea palliata I. Geoffroy Saint-Hilaire, 1836
References
Bulletin de la Société des Sciences Naturelles de France (1835) p. 115
Vernacular names
English: Sickle-billed vanga
español: Vanga piquicurvo
فارسی: وانگای داسمنقار
suomi: Sirppivanga
français: Falculie mantelée
magyar: Sarlós vanga
italiano: Vanga beccodifalce
Nederlands: Wanga sierpodzioba
русский: Серпоклювая ванга
svenska: Kroknäbbsvanga
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.
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
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]
References
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.
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.
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.
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.
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