Greater Ani vs Smooth-billed Ani

In short

The Greater Ani and Smooth-billed Ani are similar in appearance but can be distinguished by their habitats and bill shape. The Greater Ani typically inhabits areas adjacent to water, while the Smooth-billed Ani is more common in savannas and disturbed areas. The Greater Ani has a more pronounced keel on its bill compared to the smoother bill of the Smooth-billed Ani.

Identification tips

1. Bill Shape: Look for the pronounced keel on the Greater Ani's bill compared to the smoother bill of the Smooth-billed Ani. 2. Habitat: Note the habitat; Greater Anis are near water, while Smooth-billed Anis are in open, disturbed areas. 3. Group Behavior: Greater Anis forage in smaller groups along water, while Smooth-billed Anis are often in larger, communal groups.

Size

Both species are similar in size, with no significant differences noted in field observations.

Plumage

Both species have glossy black plumage, but the Greater Ani may appear slightly more iridescent. The plumage differences are subtle and not the most reliable field marks.

Behaviour

Greater Anis often forage in loose social groups along water edges, while Smooth-billed Anis are known for their communal breeding and can be seen in larger groups in open areas.

Habitat

Greater Anis are typically found near water bodies like rivers and lakes, whereas Smooth-billed Anis prefer savannas, second-growth scrubland, and disturbed areas.

Voice

Both species have distinctive calls, but specific differences in vocalizations are not well-documented in the sources.