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Dideric Cuckoo
Chrysococcyx capriusA stunning bronze-green cuckoo with a distinctive red eye – a master of deception in the African woodlands.
The Dideric Cuckoo (Chrysococcyx caprius), also known as the Diederik Cuckoo, is a small, stunning bird in the cuckoo family Cuculidae. A brood parasite, it lays its eggs in the nests of other birds, and is known for its iridescent bronze-green plumage, red eye-ring, and distinctive 'dee-dee-dee-dederik' call that echoes through the African woodlands.
Dideric Cuckoo Quick Facts
What Is the Dideric Cuckoo?
The Dideric Cuckoo (Chrysococcyx caprius) is a small, stunning bird belonging to the cuckoo family Cuculidae. It was first described by the Swedish naturalist Carl Linnaeus in 1766. The species name caprius is derived from the Latin caper meaning "goat", though the connection is unclear.
This species is also known as the Diederik Cuckoo or Didric Cuckoo. It is a brood parasite, meaning it lays its eggs in the nests of other birds, leaving the host to incubate and raise its young. The Dideric Cuckoo is known for its iridescent bronze-green plumage and its distinctive, far-carrying call, which has been described as a rhythmic "dee-dee-dee-dederik".
It is a common resident and intra-African migrant across much of sub-Saharan Africa, found in woodland, savanna, and forest edge habitats. The species is sexually dimorphic, with males and females differing in their plumage colouration.
How to Identify a Dideric Cuckoo
The Dideric Cuckoo is a small, distinctive bird, easily recognised by its iridescent plumage and red eye-ring. Here are its key identifying features:
- Size: A small, slender cuckoo measuring 18-20 cm (7-8 in) in length and weighing 25-35 g (0.9-1.2 oz).
- Male: Iridescent bronze-green upperparts with a metallic sheen. The underparts are white with green barring. The bill is dark, and the legs are grey.
- Female: Similar to the male but with less intense barring and a more bronzy-brown appearance. The eye-ring is less prominent.
- Eye-ring: The male has a distinctive red eye-ring, which is a key identification feature.
- Tail: Long and graduated with white tips on the outer feathers.
- Bill: Dark, slender, and slightly curved.
- Juvenile: Duller and browner, with white streaks on the head and less distinct barring.
Distinguishing from Similar Species
The Dideric Cuckoo can be confused with the Klaas's Cuckoo (Chrysococcyx klaas) and the African Emerald Cuckoo (Chrysococcyx cupreus). The male Klaas's Cuckoo has a white (not red) eye-ring and lacks the green barring on the underparts. The African Emerald Cuckoo is larger, has a red eye-ring, and the male has a bright green crown and more extensive green on the upper breast.
Behavior & Social Life
The Dideric Cuckoo is a solitary bird, usually seen alone or in pairs. It is a vocal species, particularly during the breeding season.
Foraging Behavior
- Insectivorous diet: The Dideric Cuckoo feeds mainly on insects, with a particular preference for caterpillars. It also eats beetles, grasshoppers, termites, and other invertebrates.
- Foraging technique: It hunts by gleaning from foliage or making short sallies to catch insects in flight. It is often seen in the canopy of trees, searching for caterpillars.
Brood Parasitism
- Host species: The Dideric Cuckoo parasitises the nests of weavers, bishops, sparrows, and other small passerines.
- Egg mimicry: The female lays a single egg in the host's nest, mimicking the host's eggs in colour and pattern to avoid detection.
- Chick behaviour: The cuckoo chick often ejects the host's eggs or chicks from the nest shortly after hatching, ensuring it receives all the food from the host parents.
Vocalization
- Call: The Dideric Cuckoo's call is a distinctive, rhythmic "dee-dee-dee-dederik" or "dee-dee-dee-dee-diderik", which gives the bird its common name.
- Song: The song is a series of clear, whistled notes, often repeated many times, and is one of the most characteristic sounds of African woodlands.
Habitat & Distribution
The Dideric Cuckoo is found in a variety of woodland and forest habitats across sub-Saharan Africa.
Key habitat types include:
- Woodland – particularly miombo, acacia, and broadleaf woodlands.
- Savanna – with scattered trees and shrubs.
- Forest edge – and riverine forest.
- Scrubland – and thickets.
Distribution: The Dideric Cuckoo has an extremely large range, with an Extent of Occurrence of approximately 15,600,000 km². It is found across much of sub-Saharan Africa, from Senegambia in the west to Ethiopia and Kenya in the east, and southwards to South Africa.
Migration: The species is a partial migrant, with some populations moving within Africa in response to rainfall and food availability.
Tanzania Distribution
In Tanzania, the Dideric Cuckoo is found in woodland, savanna, and forest edge habitats across the country. It has been recorded in Serengeti National Park, Ngorongoro Conservation Area, Tarangire National Park, and Ruaha National Park.
Dideric Cuckoo in Tanzania
The Dideric Cuckoo is a beautiful and fascinating bird of Tanzania's woodlands and savannas. Here are the best locations to see it:
Serengeti National Park
Found in the Serengeti's woodland and savanna areas, particularly in areas with tall trees. Often heard before it is seen, thanks to its distinctive call.
Serengeti safariNgorongoro Crater
Recorded in the Ngorongoro Conservation Area, especially in the Lerai Forest and other woodland areas. Often seen perched in the canopy.
Ngorongoro safariTarangire National Park
Found in the acacia woodlands and riverine forest areas of Tarangire. Often seen foraging in the canopy for caterpillars.
Tarangire safariRuaha National Park
A resident species in Ruaha's miombo woodland and riverine forest habitats. Often found in areas with abundant insect life.
Ruaha safariSafari Methods
- Game drives in woodland, savanna, and forest edge areas.
- Birdwatching – look for the small, slender cuckoo with bronze-green plumage and a red eye-ring, often seen in the canopy.
- Wildlife photography – the Dideric Cuckoo's iridescent plumage makes it a spectacular photographic subject.
- Listen for calls – the distinctive "dee-dee-dee-dederik" call is often the first indication of its presence.
Best Time to See Them
Dideric Cuckoos are resident year-round in suitable habitat, though they are most vocal and active during the breeding season (September to March). The dry season (June to October) is generally best for wildlife viewing.
Diet & Feeding
The Dideric Cuckoo is an insectivore, with a diet consisting mainly of insects.
Food Sources
- Caterpillars: A particular favourite, often taken from the foliage of trees.
- Beetles: Various beetles and other insects.
- Grasshoppers: And other orthopterans.
- Termites: A seasonal food source, particularly during swarming.
- Other insects: Including ants, flies, and moths.
Feeding Behavior
The Dideric Cuckoo hunts by gleaning from foliage, searching for caterpillars and other insects among the leaves and branches of trees. It also makes short sallies to catch insects in flight. It is most often seen in the canopy, where it moves with agility through the branches.
Breeding & Life Cycle
The Dideric Cuckoo is a brood parasite, meaning it does not build its own nest but lays its eggs in the nests of other birds.
Brood Parasitism
- Host species: The Dideric Cuckoo parasitises the nests of weavers, bishops, sparrows, and other small passerines.
- Egg mimicry: The female lays a single egg in the host's nest, mimicking the host's eggs in colour and pattern to avoid detection.
- Breeding season: Typically during the rainy season, from September to March in East Africa.
- Incubation: The host incubates the egg for about 12-14 days.
- Chick behaviour: The cuckoo chick often ejects the host's eggs or chicks from the nest shortly after hatching, ensuring it receives all the food from the host parents.
- Fledging: The chick fledges after about 20-25 days.
Conservation Status
The Dideric Cuckoo is assessed as Least Concern on the IUCN Red List.
Population: The global population has not been quantified, but it is not believed to approach the thresholds for Vulnerable. The population trend is stable.
Justification: This species has an extremely large range (15,600,000 km²) and hence does not approach the thresholds for Vulnerable under the range size criterion. The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion.
Threats: While the species is not currently threatened globally, local threats may include habitat loss through deforestation and agricultural expansion.
Comparisons
The Dideric Cuckoo is sometimes confused with other cuckoos. Here are the key differences:
| Feature | Dideric Cuckoo | Klaas's Cuckoo | African Emerald Cuckoo |
|---|---|---|---|
| Size | 18-20 cm | 16-18 cm | 20-22 cm |
| Male Eye-ring | Red | White | Red |
| Underparts | White with green barring | White with green streaks | Green with white barring |
| Upperparts | Bronze-green | Bronze-green | Bright green |
| Call | "dee-dee-dee-dederik" | High-pitched whistle | Loud, descending whistle |
| Range | Sub-Saharan Africa | Sub-Saharan Africa | Sub-Saharan Africa |
Did You Know?
Distinctive Call
The Dideric Cuckoo's call is a rhythmic "dee-dee-dee-dederik", which gives the bird its common name and is one of the most characteristic sounds of African woodlands.
Master of Deception
This cuckoo is a brood parasite, laying its eggs in the nests of weavers and sparrows. The female mimics the host's eggs to avoid detection.
Iridescent Beauty
The male's bronze-green plumage has a metallic sheen that shimmers in the sunlight, making it one of Africa's most striking small birds.
Caterpillar Specialist
The Dideric Cuckoo has a particular preference for caterpillars, which it plucks from the foliage of trees with remarkable skill.
Intra-African Migrant
Some populations of Dideric Cuckoo are migratory, moving within Africa in response to rainfall and food availability.
Red Eye-Ring
The male's bright red eye-ring is a key identification feature, distinguishing it from similar cuckoo species.
There is a moment in the African bush when the air is still and the sun is warm, and then it comes – the unmistakable call of the Dideric Cuckoo. "Dee-dee-dee-dederik" – a rhythmic, almost hypnotic sound that seems to come from everywhere and nowhere at once. And then, a flash of bronze-green in the canopy, and the bird reveals itself: a small, perfect jewel, its red eye-ring gleaming, its iridescent feathers catching the light. It is a master of concealment, a bird that hides in plain sight, and yet its call betrays its presence. The Dideric Cuckoo is a reminder that some of the most beautiful things in life are also the most elusive – and that sometimes, the best way to find them is to listen.
Gallery
Frequently Asked Questions
The Dideric Cuckoo (Chrysococcyx caprius), also known as the Diederik Cuckoo, is a small, stunning bird in the cuckoo family Cuculidae. It is a brood parasite, laying its eggs in the nests of other birds, and is known for its iridescent bronze-green plumage and distinctive 'dee-dee-dee-dederik' call.
Dideric Cuckoos are found in woodland, savanna, and forest edge habitats across Tanzania. Key locations include Serengeti National Park, Ngorongoro Conservation Area, Tarangire National Park, and Ruaha National Park.
The Dideric Cuckoo feeds mainly on insects, with a particular preference for caterpillars. It also eats other insects, including beetles, grasshoppers, and termites. It hunts by gleaning from foliage or making short sallies.
No. The Dideric Cuckoo is listed as Least Concern on the IUCN Red List. It has an extremely large range and a stable population.
The Dideric Cuckoo is a small, slender bird with iridescent bronze-green upperparts and white underparts with green barring. The male has a distinctive red eye-ring and a dark bill. The female is similar but has less intense barring.
The Dideric Cuckoo is a small bird, measuring 18-20 cm (7-8 in) in length and weighing 25-35 grams (0.9-1.2 oz).
The Dideric Cuckoo is a brood parasite. The female lays a single egg in the nest of a host species, typically weavers, bishops, or sparrows. The host incubates the egg and raises the chick, which often ejects the host's eggs or chicks. The breeding season coincides with the rainy season.
In Swahili, the Dideric Cuckoo is known as Kekeo or Kekeo-didiriki.
References & Further Reading
- BirdLife International – Dideric Cuckoo: IUCN Red List assessment, Least Concern status, range 15,600,000 km².
- Wikipedia – Dideric cuckoo: Description, distribution, habitat, diet, breeding, conservation.
- eBird – Dideric Cuckoo: Identification, distribution, sightings.
- Avibase – Dideric Cuckoo: Taxonomy, subspecies, distribution.
- Birds of the World – Dideric Cuckoo: Introduction, identification, habitat, behavior, breeding.
- Oiseaux.net – Dideric Cuckoo: Photo records from Tanzania.
- South African National Biodiversity Institute – Dideric Cuckoo: Conservation status, threats, research.
