Vangidae | |
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White-headed vanga (Artamella viridis) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Superfamily: | Malaconotoidea |
Family: | Vangidae Swainson, 1831 |
Genera | |
21, see text | |
Synonyms | |
Tephrodornithidae |
The family Vangidae (from vanga, Malagasy for the hook-billed vanga, Vanga curvirostris) [1] 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.
In addition to the small set of Malagasy species traditionally called the vangas, Vangidae includes some Asian groups: the woodshrikes (Tephrodornis), flycatcher-shrikes (Hemipus) and philentomas. [2]
Vangidae belongs to a clade of corvid birds that also includes bushshrikes (Malaconotidae), ioras (Aegithinidae) and the Australian butcherbirds, magpies and currawongs (Cracticidae) and woodswallows (Artamidae), which has been defined as the superfamily Malaconotoidea. [3] They seem closely related to some enigmatic African groups: the helmetshrikes (Prionops) and the shrike-flycatchers ( Bias and Megabyas ). [4]
On Madagascar, vangas were traditionally believed to be a small family of shrike-like birds. Recent research suggests that several Madagascan taxa most similar in appearance and habits (and formerly considered to be) Old World warblers, Old World flycatchers or Old World babblers may be vangas. Yamagishi et al. found in 2001 that Newtonia appeared to belong with the vangas rather than the warblers and also that Tylas was a vanga and not a bulbul. [5] It also appears that Ward's flycatcher and Crossley's babbler belong with the vangas. [6] [7] [8]
The phylogenetic relationships between the genera are shown below. The cladogram is based on a study by Sushma Reddy and collaborators that was published in 2012. The species in the subfamily Vanginae are endemic to Madagascar. [9]
Vangidae |
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The vangas are an example of adaptive radiation, having evolved from a single founding population into a variety of forms adapted to various niches occupied by other bird families in other parts of the world. [10] They differ in size, colour and bill shape but are similar in skull shape and bony palate structure. [11] They are small to medium-sized birds, varying from 12 to 32 cm in length. [12] Many have strong, hooked bills similar to those of shrikes. The helmet vanga has a particularly large bill with a casque on top. Other species, such as the newtonias, have a small, thin bill. The sickle-billed vanga is notable for its long, curved bill used to probe into holes and cracks. [11]
Most vangas are largely black, brown or grey above and white below. Exceptions include the blue and white blue vanga and the blue-grey nuthatch vanga. The helmet vanga is mostly black with a rufous back. Male Bernier's vangas are entirely black while the females are brown. It is one of several species with distinct male and female plumage while in other species the sexes are identical. [12]
Most vangas have whistling calls. [12]
They are native to Sub-Saharan Africa and the Indomalayan realm, although most are endemic to Madagascar in a variety of forest and scrub habitats. Several species including Van Dam's vanga and sickle-billed vanga can be found in the dry deciduous forests in the west of the island. Some such as Crossley's babbler, helmet vanga and Bernier's vanga are restricted to rainforest in the east of the island. Lafresnaye's vanga and the recently discovered red-shouldered vanga occur in subarid thorn scrub in the south-west. [12]
Their diet can include insects, earthworms, millipedes, lizards and amphibians. [11] The blue vanga and chabert vanga occasionally eat fruit. [10] Many species feed in small groups, often in mixed-species foraging flocks. The hook-billed vanga and Lafresnaye's vanga tend to forage alone. [11] Vangas have a variety of different foraging strategies. Many species glean food as they move through the branches. The nuthatch vanga climbs up trunks and branches like a nuthatch but does not climb downwards as nuthatches do. [12] Crossley's babbler forages by walking along the forest floor amongst the leaf litter. [12] The chabert vanga and the tylas vanga often fly into the air to catch prey. The three Xenopirostris vangas use their laterally flattened bills to strip bark off trees to search for food underneath. [10]
Most species nest in pairs, building cup-shaped nests using twigs, bark, roots and leaves. The sickle-billed vanga nests in groups and builds a large nest of sticks. [11]
Some species of vanga are common such as the chabert vanga which can survive in secondary woodland and plantations of introduced trees. [12] Several other species are threatened by loss of their forest habitat. Pollen's vanga is classed as near-threatened by BirdLife International and the red-shouldered vanga, Bernier's vanga, helmet vanga and red-tailed newtonia are regarded as vulnerable. Van Dam's vanga is classed as endangered because it is restricted to a small area of north-west Madagascar where the forest is rapidly disappearing due to clearance for agriculture and uncontrolled bushfires. [13]
The family contains 21 genera and 40 species. [14]
FAMILY: VANGIDAE
The Old World warblers are a large group of birds formerly grouped together in the bird family Sylviidae. They are not closely related to the New World warblers. The family held over 400 species in over 70 genera, and were the source of much taxonomic confusion. Two families were split out initially, the cisticolas into Cisticolidae and the kinglets into Regulidae. In the past 20–30 years they have been the subject of much research and many species are now placed into other families, including the Acrocephalidae, Cettiidae, Phylloscopidae, and Megaluridae. In addition some species have been moved into existing families or have not yet had their placement fully resolved. Only a small number of warblers, in just two genera, are now retained in the family Sylviidae.
Helmetshrikes are the eight species of smallish to mid-sized songbirds in the genus Prionops. They were previously included with the true shrikes in the family Laniidae, later on split between several presumably closely related groups such as bushshrikes (Malaconotidae) and cuckooshrikes (Campephagidae), but are now considered sufficiently distinctive to be separated from that group into the family Vangidae.
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.
The bar-winged flycatcher-shrike is a small passerine bird usually placed in the Vangidae. It is found in the forests of tropical southern Asia from the Himalayas and hills of southern India to Indonesia. Mainly insectivorous it is found hunting in the mid-canopy of forests, often joining mixed-species foraging flocks. They perch upright and have a distinctive pattern of black and white, males being more shiny black than the females. In some populations the colour of the back is brownish while others have a dark wash on the underside.
A shrike is a passerine bird of the family Laniidae.
The Madagascar lowland forests or Madagascar humid forests are a tropical moist broadleaf forest ecoregion found on the eastern coast of the island of Madagascar, home to a plant and animal mix that is 80 to 90% endemic, with the forests of the eastern plain being a particularly important location of this endemism. They are included in the Global 200 list of outstanding ecoregions.
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.
The black-and-white shrike-flycatcher, also known as the black-and-white flycatcher or vanga flycatcher, is a species of passerine bird found in Africa. It was placed with the wattle-eyes and batises in the family Platysteiridae but is now considered to be more closely related to the helmetshrikes and woodshrikes.
Calicalicus is a genus of bird in the family Vangidae. It contains two species, both of which are endemic to Madagascar:
The sickle-billed vanga 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.
The black-winged flycatcher-shrike is a species of bird in the flycatcher-shrike genus, Hemipus. It is usually placed in the Vangidae. It is found in the Malay Peninsula and the Greater Sunda Islands. Its natural habitats are lowland forests and sometimes swamps and mangroves. The International Union for Conservation of Nature (IUCN) has assessed it as being of least concern.
The red-billed helmetshrike or chestnut-bellied helmetshrike is a species of bird in the Vanga family, Vangidae, formerly usually included in the Malaconotidae.
The woodshrikes are a genus, Tephrodornis, of birds in the family Vangidae.
Newtonia is a genus of passerine birds containing four to five species. They were formerly classified in the Old World warbler family Sylviidae or Old World flycatcher family Muscicapidae but have recently been shown to belong to the vanga family Vangidae. They are endemic to Madagascar where they occur in forest or scrubland. They forage in pairs for insects, often joining mixed-species feeding flocks.
Zahamena National Park is a national park of Madagascar. Established in 1997, it covers an area of 423 square kilometres (163.32 sq mi) out of a total protected area of 643 square kilometres (248.26 sq mi). It is part of a UNESCO World Heritage Site, Rainforests of the Atsinanana, inscribed in 2007 and consisting of 13 specific areas located within eight national parks in the eastern part of Madagascar. In 2001, Bird Life International assessed avifauna of 112 species of which 67 species are exclusively endemic to Madagascar.
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.
Malaconotoidea is a superfamily of passerine birds. They contain a vast diversity of omnivorous and carnivorous songbirds widespread in Africa and Australia, many of which superficially resemble shrikes. It was defined and named by Cacraft and colleagues in 2004 and contains the bushshrikes (Malaconotidae), helmetshrikes (Prionopidae), ioras (Aegithinidae), vangas (Vangidae) and the Australian butcherbirds, magpies, currawongs and woodswallows (Artamidae). Molecular analysis in 2006 added the Bornean bristlehead to the group, though its position in the Malconotoidea is unclear. It was initially thought related to the butcherbirds and woodswallows but now is thought to be an early offshoot.