Drongo

A drongo is a member of the 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.

Taxonomy

The genus Dicrurus was introduced by French ornithologist Louis Pierre Vieillot for the drongos in 1816.<ref>Template:Cite book</ref> The type species was subsequently designated as the balicassiao (Dicrurus balicassius) by English zoologist George Robert Gray in 1841.<ref>Template:Cite book</ref><ref>Template:Cite book</ref> The name of the genus combines the Ancient Greek words dikros "forked" and oura "tail".<ref name=hbwkey>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> "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.<ref name="EoB">Template:Cite book</ref>

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).<ref>Christidis, Les; Walter Boles (2008) Systematics and Taxonomy of Australian Birds. Csiro Publishing, Australia. p. 174</ref>

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.<ref>Template:Cite journal</ref>

The genus Dicrurus contains 28 species:<ref name=ioc>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Image	Common Name	Scientific name	Distribution
File:Square-tailed Drongo (Dicrurus ludwigii) (cropped).jpg	Square-tailed drongo	Dicrurus ludwigii	southern Africa.
File:SharpesDrongo.jpg	Sharpe's drongo	Dicrurus sharpei	southern South Sudan and western Kenya to the Democratic Republic of the Congo to Nigeria
File:Dicrurus atripennis 111213.jpg	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.
File:Fork-tailed Drongo (Dicrurus adsimilis) 2.jpg	Fork-tailed drongo	Dicrurus adsimilis	Gabon, Congo Republic, DRC, Angola, northwestern Zambia, Namibia, Botswana and northwestern South Africa
File:Velvet-mantled Drongo from Canopy Walkway - Kakum NP - Ghana 14 S4E1498 (cropped).jpg	Velvet-mantled drongo	Dicrurus modestus	Nigeria and Cameroon to the Democratic Republic of Congo and Angola.
	Grande Comore drongo	Dicrurus fuscipennis	Comoros.
File:Dicrurus aldabranus 59442457 (cropped).jpg	Aldabra drongo	Dicrurus aldabranus	Seychelles
File:Crested Drongo, Ankarafantsika National Park, Madagascar.jpg	Crested drongo	Dicrurus forficatus	Madagascar and Comoros
	Mayotte drongo	Dicrurus waldenii	Mayotte.
File:Black Drongo Dicrurus macrocercus (Vieillot, 1817) (7005202663).jpg	Black drongo	Dicrurus macrocercus	Iran through Pakistan, India, Bangladesh and Sri Lanka east to southern China and Indonesia and accidental visitor of Japan
File:Ashy drongo ,Dicrurus leucophaeus.jpg	Ashy drongo	Dicrurus leucophaeus	eastern Afghanistan east to southern China, Ryukyu Islands in southern Japan (particularly Okinawa) and Indonesia.
File:Thimindu White bellied Drongo 1.jpg	White-bellied drongo	Dicrurus caerulescens	India and Sri Lanka.
File:Crow-billed Drongo (Dicrurus annectans) - Flickr - Lip Kee (cropped).jpg	Crow-billed drongo	Dicrurus annectens	Bangladesh, Bhutan, Brunei, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Philippines, Singapore, Thailand, and Vietnam.
File:Bronzed Drongo I IMG 1677.jpg	Bronzed drongo	Dicrurus aeneus	western Uttaranchal eastwards into Indochina and Hainan, the Malay Peninsula, Sumatra and northern Borneo
File:Dicrurus remifer 180352515.jpg	Lesser racket-tailed drongo	Dicrurus remifer	Bangladesh, Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand, and Vietnam.
File:Dicrurus balicassius.jpg	Balicassiao	Dicrurus balicassius	Philippines.
	Short-tailed drongo	Dicrurus striatus	Philippines.
File:Dicrurus hottentottus-20030823.jpg	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.
File:Wallacean Drongo (Dicrurus densus) (8074119894) (cropped).jpg	Wallacean drongo	Dicrurus densus	Indonesia and East Timor.
File:Dicrurus montanus 64408649.jpg	Sulawesi drongo	Dicrurus montanus	Sulawesi in Indonesia.
File:Dicrurus bracteatus - Wonga.jpg	Spangled drongo	Dicrurus bracteatus	Australia, New Guinea, Indonesia
	Paradise drongo	Dicrurus megarhynchus	New Ireland in the Bismarck Archipelago, Papua New Guinea.
File:Andaman Drongo (Dicrurus andamanensis) in tree (cropped).jpg	Andaman drongo	Dicrurus andamanensis	Andaman Islands
File:Greater Racket-tailed Drongo Dicrurus paradiseus (Linnaeus, 1766) (16169002507).jpg	Greater racket-tailed drongo	Dicrurus paradiseus	India to Borneo and Java
File:Sri Lanka drongo - Sri Lanka - 01.jpg	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.<ref name=pasquet>Template:Cite journal</ref>

Characteristics

File:Bronzed Drongo I IMG 1682.jpg

Bronzed drongo (Dicrurus aeneus) in India

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.<ref>Template:Cite journal</ref><ref>National Geographic: African Bird Shouts False Alarms to Deceive and Steal, Study Shows Drongos in the Kalahari are masters of deception, 1 May 2014</ref><ref name="mimicking">Template:Cite journal</ref>

Insult

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.<ref name = "Cassell"/><ref>Template:Cite book</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>Template:Cite news</ref>

Gallery

• Greater-racket-tailed-drongo-khao-yai.webm

  A greater racket-tailed drongo preening at Khao Yai National Park, Thailand

• A flying greater racket-tailed drongo.jpg

  A greater racket-tailed drongo visiting Erythrina flowers at Satchari National Park in Bangladesh

• Lesser Racket-tailed Drongo at nest - Kang Kra Chan - Thailand S4E4944 (14278976543) (2).jpg

  A lesser racket-tailed drongo incubating at Kaeng Krachan National Park in Thailand

Further reading

• Template:Cite journal
• Template:Cite journal

External links

• Drongo videos on the Internet Bird Collection