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- Suiriri suiriri
Identification
Potentially confusing. Note relatively stubby all-black bill, grey head contrasting with greener mantle, dark lores, whitish supraloral and pale grey chest. Typically also with pale rump, but this lacking in S. s. bahiae. Belly yellow in S. s. affinis and S. s. bahiae; white in S. s. suiriri. Compare especially smaller and thinner-billed White-crested and White-bellied Tyrannulet, which also show more distinct white supraloral, and shorter-billed Amazonian and Southern Scrub Flycatcher, which lack contrast between head and back. The smaller Southern Beardless Tyrannulet has a very different behaviour and jizz (typically somewhat crested, and shorter tail commonly cocked), and at least the base of its lower mandible is pale. For separation from the Chapada Flycatcher, the only potentially confusing species that also has a pale rump, see taxonomy.
Distribution
Found widely in eastern Brazil, Bolivia, Paraguay, Uruguay and northern Argentina. Locally also in southern Suriname. S. s. suiriri is found in the southern part of its range (Paraguay, Uruguay, Bolivia, Argentina and southern Brazil), S. s. bahiae is found in north-eastern Brazil, and S. s. affinis in the remaining part of its range. See also taxonomy.
Taxonomy
The two yellow-bellied taxa (S. s. burmeisteri and S. s. bahiae) are sometimes considered a separate species, the Campo Suiriri (S. burmeisteri), in which case the white-bellied nominate (S. s. suiriri) is considered a monotypic species, the Chaco Suiriri (S. suiriri). The two groups are known to hybridize where they come into contact, especially in Bolivia, and are therefore considered a single species by most recent authorities. The Chapada Flycatcher, with slightly shorter bill and broader whitish tail-tip, was long confused with the Suiriri Flycatcher. The Suiriri Flycatcher lacks the distinctive "wing-lifting" display of the Chapada Flycatcher.
Habitat
Open to semi-open habitats, including Caatinga, Cerrado and other savanna-like habitats. Avoids dense humid forest. Generally uncommon, but widely distributed and overall not threatened.
