From Opus

Photo by Arthur Grosset
Locality: Barra do Quara, Rio Grande do Sul, Brazil.

Mimus saturninus

[edit] Identification

This mockingbird has pale overall colour, with brown wings and tail. A brown stripe crosses its eyes as well. The bird has a chalk (clearer) eyebrow and the white tip on the end of its tail is easily noticed when in flight. Colour variations can happen due to local soils. The Chalk-browed Mockingbird can easily be mistaken with its congener, the Tropical Mockingbird (Mimus gilvus). In the limited area of overlap (only in coastal Brazil), the Chalk-browed Mockingbird can be separated from the Tropical by its browner (less grey) plumage and its stronger post-ocular spot/streak (reduced in the Tropical).

[edit] Distribution

North-east Brazil, Bolivia, Paraguay, Uruguay and northern Argentina.

[edit] Taxonomy

Polytypic. Consists of four subspecies.

[edit] Habitat

Mainly found in open and semi-open areas.

[edit] Behaviour

This bird is commonly found in flocks of up to 13 individuals. While walking on the ground or perched in branches, it often opens and closes its wings partially and rapidly, while singing. This territorial display is often done by the entire group.

Its diet consist basically of fruits and invertebrates, especially insects. Since the seeds are not digested, this mockingbird may help in the dispersal of some plants, e.g. orange and avocado.

[edit] Vocalisation

It is famous for its huge repertoire of songs and calls, including many imitations of other birds.

[edit] External Links