Drongo | |
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Hair-crested drongo (D. hottentottus striatus) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Superfamily: | Corvoidea |
Family: | Dicruridae Vigors, 1825 |
Genus: | Dicrurus Vieillot, 1816 |
Type species | |
Corvus balicassius (Balicassiao) Linnaeus, 1766 |
Dicrurus phylogeny | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Cladogram based on a study by Eric Pasquet and colleagues published in 2007. [1] |
The drongos are a family, Dicruridae, of passerine birds of the Old World tropics. The 28 species in the family are placed in a single genus, Dicrurus.
Drongos are mostly black or dark grey, short-legged birds, with an upright stance when perched. They have forked tails and some have elaborate tail decorations. They feed on insects and small birds, which they catch in flight or on the ground. Some species are accomplished mimics and have a variety of alarm calls, to which other birds and animals often respond. They are known to utter fake alarm calls that scare other animals off food, which the drongo then claims.
The genus Dicrurus was introduced by French ornithologist Louis Pierre Vieillot for the drongos in 1816. [2] The type species was subsequently designated as the balicassiao (Dicrurus balicassius) by English zoologist George Robert Gray in 1841. [3] [4] The name of the genus combines the Ancient Greek words dikros "forked" and oura "tail". [5] "Drongo" is originally from the indigenous language of Madagascar, where it refers to the crested drongo; it is now used for all members of the family. [6]
This family now includes only the genus Dicrurus, although Christidis and Boles (2007) expanded the family to include the subfamilies Rhipidurinae (Australasian fantails), Monarchinae (monarch and paradise flycatchers), and Grallininae (magpie larks). [7]
The family was formerly treated as having two genera, Chaetorhynchus and Dicrurus. The genus Chaetorhynchus contains a single species, the New Guinea-endemic C. papuensis . On the basis of both morphological and genetic differences, it is now placed with the fantails (Rhipiduridae) and renamed from the pygmy drongo to the drongo fantail. [8]
The genus Dicrurus contains 28 species: [9]
Image | Common Name | Scientific name | Distribution |
---|---|---|---|
Square-tailed drongo | Dicrurus ludwigii | southern Africa. | |
Sharpe's drongo | Dicrurus sharpei | southern South Sudan and western Kenya to the Democratic Republic of the Congo to Nigeria | |
Shining drongo | Dicrurus atripennis | Cameroon, Central African Republic, Republic of the Congo, Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Gabon, Ghana, Guinea, Liberia, Nigeria, Sierra Leone, and Togo. | |
Fork-tailed drongo | Dicrurus adsimilis | Gabon, Congo Republic, DRC, Angola, northwestern Zambia, Namibia, Botswana and northwestern South Africa | |
Velvet-mantled drongo | Dicrurus modestus | Nigeria and Cameroon to the Democratic Republic of Congo and Angola. | |
Grande Comore drongo | Dicrurus fuscipennis | Comoros. | |
Aldabra drongo | Dicrurus aldabranus | Seychelles | |
Crested drongo | Dicrurus forficatus | Madagascar and Comoros | |
Mayotte drongo | Dicrurus waldenii | Mayotte. | |
Black drongo | Dicrurus macrocercus | Iran through Pakistan, India, Bangladesh and Sri Lanka east to southern China and Indonesia and accidental visitor of Japan | |
Ashy drongo | Dicrurus leucophaeus | eastern Afghanistan east to southern China, Ryukyu Islands in southern Japan (particularly Okinawa) and Indonesia. | |
White-bellied drongo | Dicrurus caerulescens | India and Sri Lanka. | |
Crow-billed drongo | Dicrurus annectens | Bangladesh, Bhutan, Brunei, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Philippines, Singapore, Thailand, and Vietnam. | |
Bronzed drongo | Dicrurus aeneus | western Uttaranchal eastwards into Indochina and Hainan, the Malay Peninsula, Sumatra and northern Borneo | |
Lesser racket-tailed drongo | Dicrurus remifer | Bangladesh, Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand, and Vietnam. | |
Balicassiao | Dicrurus balicassius | Philippines. | |
Short-tailed drongo | Dicrurus striatus | Philippines. | |
Hair-crested drongo | Dicrurus hottentottus | Bangladesh, India, and Bhutan through Indochina to China, Indonesia, and Brunei. | |
Tablas drongo | Dicrurus menagei | Philippines. | |
Palawan drongo | Dicrurus palawanensis | Palawan. | |
Sumatran drongo | Dicrurus sumatranus | Sumatra in Indonesia. | |
Wallacean drongo | Dicrurus densus | Indonesia and East Timor. | |
Sulawesi drongo | Dicrurus montanus | Sulawesi in Indonesia. | |
Spangled drongo | Dicrurus bracteatus | Australia, New Guinea, Indonesia | |
Paradise drongo | Dicrurus megarhynchus | New Ireland in the Bismarck Archipelago, Papua New Guinea. | |
Andaman drongo | Dicrurus andamanensis | Andaman Islands | |
Greater racket-tailed drongo | Dicrurus paradiseus | India to Borneo and Java | |
Sri Lanka drongo | Dicrurus lophorinus | Sri Lanka. | |
The family Dicruridae is most likely of Indo-Malayan origin, with a colonization of Africa about 15 million years ago (Mya). Dispersal across the Wallace Line into Australasia is estimated to have been more recent, around 6 Mya. [1]
These insectivorous birds are usually found in open forests or bush. Most are black or dark grey in colour, sometimes with metallic tints. They have long, forked tails; some Asian species have elaborate tail decorations. They have short legs and sit very upright whilst perched, like a shrike. They flycatch or take prey from the ground. Some drongos, especially the greater racket-tailed drongo, are noted for their ability to mimic other birds and even mammals.
Two to four eggs are laid in a nest high in a tree. Despite their small size, they are aggressive and fearless, and will attack much larger species if their nests or young are threatened.
Several species of animals and birds respond to drongos' alarm calls, which often warn of the presence of a predator. Fork-tailed drongos in the Kalahari Desert use alarm calls in the absence of a predator to cause animals to flee and abandon food, which they eat, getting up to 23% of their food this way. They not only use their own alarm calls, but also imitate those of many species, either their victim's or that of another species to which the victim responds. If the call of one species is not effective, perhaps because of habituation, the drongo may try another; 51 different calls are known to be imitated. In one test on pied babblers, the babbler ignored an alarm call repeated three times when no danger was present, but continued to respond to different calls. Researchers have considered the possibility that these drongos possess theory of mind, not fully shown in any animal other than humans. [10] [11] [12]
The word "drongo" is used in Australian English as a mild form of insult meaning "idiot" or "stupid fellow". This usage derives from an Australian racehorse of the same name (apparently after the spangled drongo, D. bracteatus) in the 1920s that never won despite many places. The word also has been frequently used among friends and can be used in a casual or serious tone. [13] [14] [15] [16]
The willie wagtail, scientific name Rhipidura leucophrys, is a passerine bird native to Australia, New Guinea, the Solomon Islands, the Bismarck Archipelago, and Eastern Indonesia. It is a common and familiar bird throughout much of its range, living in most habitats apart from thick forest. Measuring 19–21.5 cm in length, the willie wagtail is contrastingly coloured with almost entirely black upperparts and white underparts; the male and female have similar plumage.
The fork-tailed drongo, also called the common drongo or African drongo, is a small bird found from the Sahel to South Africa that lives in wooded habitats, particularly woodlands and savannas. It is part of the family Dicruridae and has four recognized subspecies, D. a adsimilis, D. a. apivorus, D. a. fugax and D. a. jubaensis. Like other drongos, the fork-tailed is mostly insectivorous; its diet mainly consists of butterflies, termites, and grasshoppers.
The square-tailed drongo, formerly the common square-tailed drongo, is a passerine bird in the family Dicruridae. It is a common resident breeder in parts of southern Africa.
The black drongo is a small Asian passerine bird of the drongo family Dicruridae. It is a common resident breeder in much of tropical southern Asia from southwest Iran through Pakistan, India, Bangladesh and Sri Lanka east to southern China and Indonesia and accidental visitor of Japan. It is an all black bird with a distinctive forked tail and measures 28 cm (11 in) in length. It feeds on insects, and is common in open agricultural areas and light forest throughout its range, perching conspicuously on a bare perch or along power or telephone lines.
The ashy drongo is a species of bird in the drongo family Dicruridae. It is found widely distributed across eastern and Southeast Asia, with several populations that vary in the shade of grey, migration patterns and in the size or presence of white patches around the eye.
The white-bellied drongo is a species of drongo found across the Indian Subcontinent. Like other members of the family Dicruridae, they are insectivorous and mainly black in colour, but with a white belly and vent. Young birds are, however, all black and may be confused with the black drongo, which is smaller and more compact in appearance. The subspecies found in Sri Lanka has white restricted to the vent.
The greater racket-tailed drongo is a medium-sized Asian bird which is distinctive in having elongated outer tail feathers with webbing restricted to the tips. They are placed along with other drongos in the family Dicruridae. They are conspicuous in the forest habitats often perching in the open and by attracting attention with a wide range of loud calls that include perfect imitations of many other birds. One hypothesis suggested is that these vocal imitations may help in the formation of mixed-species foraging flocks, a feature seen in forest bird communities where many insect feeders forage together. These drongos will sometimes steal insect prey caught or disturbed by other foragers in the flock and another idea is that vocal mimicry helps them in diverting the attention of smaller birds to aid their piracy. They are diurnal but are active well before dawn and late at dusk. Owing to their widespread distribution and distinctive regional variation, they have become iconic examples of speciation by isolation and genetic drift.
The hair-crested drongo is an Asian bird of the family Dicruridae. This species was formerly considered conspecific with Dicrurus bracteatus, for which the name "spangled drongo" – formerly used for both – is now usually reserved. Some authorities include the Sumatran drongo in D. hottentottus as subspecies.
The spangled drongo is a bird of the family Dicruridae. It is the only drongo to be found in Australia, where it can be recognised by its black, iridescent plumage and its characteristic forked tail. It feeds on insects and small vertebrates. It has complex and varied calls and is a mimic of the sounds it hears. It arrives in Queensland in late spring and breeds high in an isolated tree, producing three to five young each year.
The drongo fantail, also known as the pygmy drongo, is a species of passerine bird endemic to the island of New Guinea. It is the only species in the genus Chaetorhynchus. The species was long placed within the drongo family Dicruridae, but it differs from others in that family in having twelve rectrices instead of ten. Molecular analysis also supports moving the species out from the drongo family, instead placing it as a sister species to the silktail of Fiji, and both those species in the fantail family Rhipiduridae.
The Aldabra drongo is a species of bird in the drongo family Dicruridae. It is endemic to Seychelles, where it occurs only on the island of Aldabra. It has a small population of only around 1000 birds.
The crow-billed drongo is a species of bird in the family Dicruridae. It is native to moist tropical forests of southeastern Asia where its range extends from India to the Philippines and Indonesia. It is a completely black bird with a shallowly forked tail and is similar in appearance to the black drongo. It breeds between April and June, the cup-shaped nest being built in the fork of a branch by both birds, the female afterwards incubating the eggs. It is a common bird and the IUCN has listed it as "least concern".
The crested drongo is a passerine bird in the family Dicruridae. It is black with a bluish-green sheen, a distinctive crest on the forehead and a forked tail. There are two subspecies; D. f. forficatus is endemic to Madagascar and D. f. potior, which is larger, is found on the Comoro Islands. Its habitat is lowland forests, both dry and humid, and open savannah country. It is a common bird and the IUCN has listed it as "least concern".
The lesser racket-tailed drongo is a species of bird in the family Dicruridae. It is found in the Indian Subcontinent and Southeast Asia.
Grallina is a genus of passerine bird native to Australia and New Guinea. It is a member of a group of birds termed monarch flycatchers.
The melampittas are a family, Melampittidae, of New Guinean birds containing two enigmatic species. The two species are found in two genera, the greater melampitta in the genus Megalampitta and the lesser melampitta in the genus Melampitta. They are little studied and before being established as a family in 2014 their taxonomic relationships with other birds were uncertain, being considered at one time related variously to the pittas, Old World babblers and birds-of-paradise.
The Sri Lanka drongo or Ceylon crested drongo, is a species of bird in the family Dicruridae. It is endemic to Sri Lanka. It was previously considered a subspecies of the greater racket-tailed drongo. Its natural habitats are subtropical or tropical moist lowland and montane forests.