Rufous-sided Scrub Tyrant

The rufous-sided scrub tyrant, or rufous-sided pygmy-tyrant, (Euscarthmus rufomarginatus) is a species of bird in the family Tyrannidae. It is found in Bolivia, Brazil, Paraguay, and Suriname. == Taxonomy and systematics == Taxonomists previously called the rufous-sided scrub tyrant the "rufous-sided pygmy tyrant or pygmy-tyrant". Beginning in 2021 most systems changed the common names of all three Euscarthmus species to scrub tyrant (or scrub-tyrant) to avoid confusion with other, unrelated, species called "pygmy tyrants". However, as of late 2024 BirdLife International's Handbook of the Birds of the World retains the "pygmy-tyrant" common name for it. The rufous-sided scrub tyrant is monotypic. == Description == The rufous-sided scrub tyrant is 9.0 to 11.5 cm (3.5 to 4.5 in) long and weighs about 6 g (0.21 oz). The sexes have the same plumage. Adults have a brown crown with a small cinnamon-rufous central patch that is somewhat hidden. They have a whitish supercilium and eye-ring on an otherwise light brown face. Their upperparts are brown. Their wings are a darker brown than the upperparts with ocraceous tips on the coverts that show as two wing bars; the inner flight feathers have thin ochraceous edges. Their tail is dusky with ochraceous edges on…