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Birdwatching in Africa - Fork-tailed Drongo, also called the Common Drongo, African Drongo, or Savanna Drongo, Dicrurus adsimilis


The Fork-tailed Drongo, also called the common drongo, African Drongo, or Savanna Drongo (Dicrurus adsimilis), is a species of drongo in the family Dicruridae, which are medium-sized passerine birds of the Old World. It is native to the tropics, subtropics and temperate zones of the Afrotropics.

Its range was formerly considered to include Asia, but the Asian species is now called the Black Drongo (Dicrurus macrocercus).

Range and habitat
The fork-tailed drongo is a common and widespread resident breeder in Africa south of the Sahara. These insect-eating birds are usually found in open forests or bush, and are tolerant of arid climates.

Range map from www.oiseaux.net

Range map
Range map from www.oiseaux.net - Ornithological Portal Oiseaux.net
www.oiseaux.net is one of those MUST visit pages if you're in to bird watching. You can find just about everything there


Races
Its populations are genetically highly structured, and four races are accepted. The races D. a. modestus (Príncipe) together with D. a. coracinus and D. a. atactus (Bioko to west and central mainland Africa, from Guinea east to western Kenya and south to Angola) are usually split as a separate species, the velvet-mantled drongo, D. modestus (Hartlaub, 1849).

• D. a. apivorus Clancey, 1976
Range: Gabon, Congo Republic, DRC, Angola, northwestern Zambia, Namibia, Botswana and northwestern South Africa Description: primary remiges with brown outer vanes and pale inner vanes (noticeable while perched and in flight respectively)
Habitat: Arid savanna

• D. a. fugax W.K.H.Peters, 1868
Range: Uganda, Kenya, Tanzania and Zanzibar, southeastern Zambia, Malawi, Mozambique, Zimbabwe, Botswana, eastern Swaziland and northeastern South Africa
Description: Smaller than nominate, outer vanes of primaries brown, and inner vanes dark

• D. a. adsimilis (Bechstein, 1794)
Range: western Swaziland, Lesotho and eastern to southern South Africa
Description: Darker remiges, especially noticeable in flight

• D. a. jubaensis van Someren, 1931
Range: Ethiopia, Eritrea, and Somalia

Description
The fork-tailed drongo is 25 cm long and has short legs. They are medium sized and usually weigh about 50 grams. Males are mainly glossy black, although their wings are duller. Females are similar but less glossy. It is large-headed with well-developed rictal and nasal bristles, which are used as sensory organs.

The rectrices curve outwards, forming the forked tail for which the species is named. The hooked bill is black and heavy, and the eye is red.

Length: 25 cm
Wingspan:
Weight:
Longevity:
Distinctive Feature

Similar Species

• Differs from similar Velvet-mantled Drongo in having tail shorter than wing, a less deep tail fork, slightly less gloss and no pale rictal spot. Square-tailed Drongo and Shining Drongo are smaller and have a less forked tail.

From opus at www.birdforum.net the forum for wild birds and birding.
Female / Male

Female similar but duller

From opus at www.birdforum.net the forum for wild birds and birding.


Calls
The call is a metallic strink-strink. The fork-tailed drongo uses alarm calls to steal food from birds and animals such as meerkats. They make drongo-specific calls as well as mimicked calls. The mimicked calls help them while they target other animals that are eating food. The animals flee, and leave their food. Once they are gone, the drongo steals it. Vocal at dawn and dusk

Listen to the Fork-tailed Drongo


www.xeno-canto.org


Behavior
They still-hunt by sitting very upright on a prominent perch, much like a shrike. They are usually solitary and form monogamous breeding pairs. They are aggressive and fearless, regularly mobbing or attacking much larger species, including birds of prey, if their nest or young are threatened or their territory is compromised.

They also join mixed foraging bird parties, and will initiate mobbing of common enemies. To maintain their plumage condition they may rain-bathe, foliage-bathe or plunge-dive into water. Terrestrial foragers like babblers may use the drongo as a sentry.

Feeding
They are almost exclusively carnivorous, but may take nectar when available. They flycatch or take prey from the ground, and are attracted to bush fires. They also utilize disturbance caused by animals, and may perch on their backs. At times they catch ectoparasites on mammals, plunge-dive to catch fish, or kleptoparasitise mammals or birds.

Kleptoparasitism
Observations show that the fork-tailed drongo in Africa are capable of using deceptive mimicked alarm calls to steal food from birds like pied babblers and animals such as meerkats. Tom Flower observed that fork-tailed drongos spend a quarter of their time following other animals.

Drongos sometimes act as sentries when a predator is approaching, warning their neighbours with genuine alarm calls. But drongos also earn a quarter of their daily calories by sounding a false alarm when another animal finds food.

When the meerkats and babblers flee from the non-existent predator, the drongo steals their food. Though in doubt, researchers have considered the possibility that these drongos possess theory of mind, not fully shown in any animal other than humans.

Nesting
Two to four eggs are laid in a cup nest in a fork high in a tree. Drongos are brood hosts for African Cuckoos and Jacobin Cuckoos.

Conservation status
Conservation status
Least Concern (IUCN 3.1)
IUCN Red List of Threatened Species 2016: e.T103710902A95034217.
https://doi.org/10.2305/IUCN.UK.2016-3.RLTS.T103710902A95034217.en. Downloaded on 22 August 2019.



From Wikipedia, the free encyclopedia
From Wikipedia, the free encyclopedia

www.birdforum.net


Sighted: 21 October 2019 (Date of first photo that I could use)
Location: Awash National Park, Ethiopia


Fork-tailed Drongo, also called the Common Drongo, African Drongo, or Savanna Drongo, Dicrurus adsimilis
Fork-tailed Drongo - 21 October 2019 - Awash National Park, Ethiopia

Fork-tailed Drongo, also called the Common Drongo, African Drongo, or Savanna Drongo, Dicrurus adsimilis
Fork-tailed Drongo - 21 October 2019 - Awash National Park, Ethiopia



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