Smooth-billed Ani vs Dark-billed Cuckoo

In short

The Smooth-billed Ani and Dark-billed Cuckoo can be distinguished by their bills and behavior. The Smooth-billed Ani has a large, smooth bill and is often found in groups, while the Dark-billed Cuckoo has a slender, dark bill and is more solitary.

Identification tips

1. Look for the large, smooth bill of the Smooth-billed Ani. 2. Observe social behavior: Anis are often in groups, while cuckoos are more solitary. 3. Note the glossy black plumage of the Ani compared to the more subdued Dark-billed Cuckoo. 4. Listen for the Ani's distinctive call. 5. Consider habitat: Anis in open areas, cuckoos in varied altitudes.

Size

Both species are similar in size, but the Smooth-billed Ani appears bulkier due to its larger bill and longer tail.

Plumage

The Smooth-billed Ani is uniformly black with a glossy sheen, whereas the Dark-billed Cuckoo has a more subdued coloration with a dark bill and lacks the glossy appearance.

Behaviour

Smooth-billed Anis are social and often seen in groups, engaging in communal nesting. Dark-billed Cuckoos are more solitary and do not exhibit communal breeding.

Habitat

Smooth-billed Anis prefer open areas like savannas and scrublands, while Dark-billed Cuckoos can be found across a range of altitudes, primarily in lowland forests.

Voice

The Smooth-billed Ani has a distinctive call, often described as a whining or squeaky sound, while the Dark-billed Cuckoo's vocalizations are less well-documented but generally quieter.