Ceuthmochares australis
Silhouette: Nicolas Huet le Jeune and Jean-Gabriel Prêtre (vectorized by T. Michael Keesey) · PhyloPic
In 3 days ~10% in a week ~30%
The green malkoha or whistling yellowbill (Ceuthmochares australis) is a species of cuckoo in the family Cuculidae. This species and the blue malkoha were previously considered conspecific and together known as the yellowbill.
It has a green tail, wings and back. It has a widespread distribution down the coast of Eastern Africa from Kenya to South Africa. It ranges from dense forest to riverine forest and forest edges. In the forest it typically lives in the subcanopy at between 8–30 m.
The green malkoha feeds primarily on insects, particularly caterpillars, beetles, grasshoppers and crickets; it will also take frogs, slugs, fruit, seeds and leaves. It moves through the tangled vegetation with a series of small hops, snatching prey as it travels. It will accompany other birds and squirrels, taking the insects flushed by them.
Unlike some other cuckoos the green malkoha is not a brood parasite, instead it cares for its own young. Breeding behaviour has been observed. The male and female face each other, first wagging their tails from side to side, then spreading them. The male also engages in gift giving, presenting the female with prey, then mounting her and feeding her while mounted. Two white and creamy eggs are laid in a nest that is a rough mass of sticks suspended around 2–5 m above the ground. Both parents care for the young.
The green malkoha is an uncommon species and rarely observed due to its secretive behaviour. However it is not considered threatened, and is listed as least concern by the IUCN. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | iSimangaliso Wetland Park | 🇿🇦 South Africa | |
| 2 | Arusha National Park | 🇹🇿 Tanzania | |
| 3 | Mikumi National Park | 🇹🇿 Tanzania | |
| 4 | Meru National Park | 🇰🇪 Kenya | |
| 5 | uMkhuze Game Reserve | 🇿🇦 South Africa | |
| 6 | Gonarezhou National Park | 🇿🇼 Zimbabwe | |
| 7 | Gorongosa National Park | 🇲🇿 Mozambique | |
| 8 | Liwonde National Park | 🇲🇼 Malawi | |
| 9 | Tsavo West National Park | 🇰🇪 Kenya |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mombasa | 🇰🇪 Kenya | |
| 2 | Dar es-Salaam | 🇹🇿 Tanzania | |
| 3 | Durban | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Green Malkoha sighting in Gorongosa National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 179th most-seen of the 250 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
April and September–October
In those months about 10% of wildlife watchers report a Green Malkoha in Gorongosa National Park on a given day, against under 5% in February, May–August and November, the lowest months. Those are among Gorongosa National Park's driest months, with about 35 mm of rain a month against 210 mm in January. March and December–January have too few records to rate.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Green Malkoha sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
7th of 9
Of the 9 parks where we can rate Green Malkoha sightings, Gorongosa National Park ranks 7th at under 5%. The best odds are in iSimangaliso Wetland Park (South Africa, about 30%), Arusha National Park (Tanzania, about 20%) and Mikumi National Park (Tanzania, about 10%).
Same family: Cuculidae
The closest relatives of the Green Malkoha that you can see in Gorongosa National Park (family Cuculidae, Cuckoos) are White-browed Coucal (about 30%) and Red-chested Cuckoo (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Green Malkoha is recorded against all the birds logged in Gorongosa National Park (16 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
