Fork-tailed Drongo

About

The Fork-tailed Drongo is a medium-sized, all-black passerine bird native to Africa. It is characterized by its glossy black plumage, red eyes, and a distinctive deeply forked tail. Known for its aggressive and fearless nature, it often harasses much larger birds and is a master mimic, incorporating calls of other species into its vocalizations. It is an opportunistic feeder, primarily insectivorous, but also consumes small vertebrates, nectar, and scavenges.

Size & lifespan

Length

23-28 cm

Wingspan

40-45 cm

Weight

39-56 g

Lifespan

Approximately 5-7 years in the wild

Diet

Omnivore (primarily insectivorous)

Physical characteristics

Plumage

Adults are entirely glossy black, often with a metallic blue-green sheen visible in good light, especially on the head and upperparts. The feathers are soft and velvety. There are no significant seasonal plumage changes.

Beak shape

The beak is stout, slightly hooked at the tip, and black. It is relatively broad at the base, typical for an insectivorous bird that catches prey in flight.

Eye color

Bright red, a striking feature against the black plumage.

Leg color

Black

Distinguishing features

Deeply forked tail (hence the name), glossy black plumage, and bright red eyes. The tail streamers are slightly outcurved.

Juvenile appearance

Juveniles are duller black than adults, often with a brownish tinge, and lack the glossy sheen. Their eyes are typically dark brown, gradually changing to red as they mature. The tail fork may be less pronounced.

Seasonal changes

No significant seasonal plumage changes. The glossy black plumage is consistent year-round.

Sexual dimorphism

Males and females are monomorphic, appearing identical in plumage and size.

How to identify

1. 1

   Plumage

   Look for entirely glossy black plumage, often with a metallic sheen in sunlight. No other colors or markings.

2. 2

   Tail Shape

   Observe the tail, which is distinctly and deeply forked, with the outer feathers curving slightly outwards.

3. 3

   Eye Color

   A key field mark is the bright red eye, which stands out against the black head. Juveniles have dark eyes.

4. 4

   Size and Build

   Medium-sized passerine (23-28 cm) with a robust build and a relatively large head.

5. 5

   Behavior

   Watch for its aggressive nature, mobbing of larger birds, and its habit of perching conspicuously on exposed branches or wires, often sallying out to catch insects.

6. 6

   Vocalizations

   Listen for its varied and often mimetic calls, which can include harsh notes, whistles, and imitations of other species.

Habitat & range

Biomes

Savanna, woodlands, open forests, scrubland, agricultural areas, suburban gardens.

Geographic range

Widespread across sub-Saharan Africa, from Senegal and Mauritania east to Eritrea and Somalia, and south to South Africa. It is absent from dense rainforests.

Elevation range

Sea level up to approximately 2,000 meters (6,500 feet).

Preferred environments

Prefers open habitats with scattered trees and bushes, often near human habitation. It is commonly found in acacia woodlands, miombo woodlands, and riparian fringes.

Behavior

Activity time

Diurnal.

Feeding habits

Primarily insectivorous, catching insects in flight (hawking) or gleaning them from foliage and the ground. It also preys on small vertebrates like lizards, small birds, and rodents. Known to follow large mammals or bushfires to catch disturbed insects. It also consumes nectar from flowers and scavenges scraps from human activity. It is a kleptoparasite, often stealing food from other birds, including raptors.

Social behavior

Typically solitary or found in pairs, especially during the breeding season. Outside of breeding, they may gather in small, loose groups. Highly territorial and aggressive, especially around their nests.

Flight pattern

Strong, direct, and agile flight, often involving rapid wing beats and sudden turns, especially when hawking for insects. It can hover briefly.

Migration pattern

Mostly resident throughout its range, but some populations in the drier northern and southern parts of its range may undertake local or partial migrations in response to rainfall and food availability.

Territoriality

Highly territorial, especially during breeding. They aggressively defend their nesting and foraging areas from intruders, including much larger birds of prey, often mobbing them relentlessly.

Breeding & reproduction

Breeding season

Varies geographically, generally coinciding with the rainy season. For example, September-January in southern Africa, March-July in West Africa.

Nesting habits

Monogamous. The nest is a neat, shallow cup made of fine twigs, grass, and rootlets, bound together with spider silk. It is typically placed in a horizontal fork of a tree branch, often at a considerable height (2-10 meters) and usually well-concealed by foliage. Both parents participate in nest building.

Clutch size

2-4 eggs (occasionally up to 5).

Egg description

Typically 2-4 eggs, though sometimes up to 5. Eggs are usually white, cream, or pale pink, often speckled or blotched with reddish-brown, purple, or grey, particularly at the broader end.

Incubation period

Approximately 16-18 days. Both parents share incubation duties.

Fledging period

About 16-20 days after hatching. Young are fed by both parents and remain dependent for some time after fledging.

Parental care

Both male and female participate in all aspects of parental care, including nest building, incubation, feeding of chicks, and defense of the nest and fledglings.

Where to find

Field tips

1. Look for conspicuous perches. Fork-tailed Drongos prefer to perch on exposed branches, power lines, or fence posts, giving them a good vantage point for hunting and territorial defense. Scan these areas.
2. Listen for varied calls. Their diverse vocalizations, including mimicry, can often give away their presence before they are seen. Learn to recognize their harsh scolding calls and metallic notes.
3. Observe feeding behavior. Watch for birds sallying out from a perch to catch insects in mid-air, or following large animals to feed on disturbed prey.
4. Check for mobbing behavior. If you see smaller birds aggressively harassing a raptor or larger bird, there's a good chance a Fork-tailed Drongo is involved.

Similar species

Quick facts

Distinctive Feature:

Deeply forked tail and bright red eyes

Dietary Niche:

Opportunistic insectivore and kleptoparasite

Vocalization Trait:

Master mimic of other bird calls

Behavioral Trait:

Highly aggressive and territorial

Habitat Preference:

Open woodlands and savannas

Fun facts

• Fork-tailed Drongos are renowned for their intelligence and cunning. They are known to use false alarm calls to scare other birds away from food, only to then swoop in and steal the abandoned meal.
• Their mimicry is so advanced that they can imitate the alarm calls of dozens of different species, making them highly effective kleptoparasites.
• Despite their relatively small size, they are fearless and will aggressively mob much larger birds, including eagles and hawks, to protect their nests or territory.
• They often associate with other species, such as hornbills or starlings, sometimes even riding on the backs of large mammals, to exploit food sources.

Scientific classification

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Passeriformes

Family

Dicruridae

Genus

Dicrurus

Species

Dicrurus adsimilis

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