Ash-coloured Cuckoo vs Dark-billed Cuckoo

In short

The Ash-colored Cuckoo and Dark-billed Cuckoo are similar in appearance but differ in bill color and habitat preference. The Ash-colored Cuckoo has a short dark bill and is elusive, often found in wooded lowland habitats. In contrast, the Dark-billed Cuckoo has a distinctive dark bill and can be found across a wider range of altitudes.

Identification tips

1. Look for the dark bill on the Dark-billed Cuckoo. 2. Note the buffy grey throat and breast on the Ash-colored Cuckoo. 3. Consider habitat: Ash-colored prefers lowland woods, while Dark-billed can be found at higher altitudes.

Size

Both species are similar in size, typical of small to medium-sized cuckoos.

Plumage

The Ash-colored Cuckoo is brown above with buffy grey on the throat and breast, while the Dark-billed Cuckoo's plumage details are less distinct in the sources, but it is known for its dark bill.

Behaviour

Both species are not nest parasites, but the Dark-billed Cuckoo is noted for raising its own young, with clutches of up to five.

Habitat

The Ash-colored Cuckoo is primarily found in lowland wooded habitats, while the Dark-billed Cuckoo inhabits a range of altitudes, from lowlands up to 3600 m.