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The Sao Paulo bristle tyrant is 10 to 11 cm (3.9 to 4.3 in) long and weighs 7 to 8 g (0.25 to 0.28 oz). The sexes have the same plumage. Adults have an olive crown, nape, back, rump, and tail. They have a thin yellow supercilium that goes beyond the eye and bends downward at the nape. Their ear coverts are yellowish with a wide black crescent between them and the extended supercilium. Their wings are dusky olive to brownish with thin yellowish olive edges on the flight feathers. Their wing coverts are dusky olive with yellowish olive tips that show as two wing bars. Voice: The Sao Paulo bristle tyrant's song is a "very/extr. high, strident 'tits' or 'ti-seet' (repeated)".
Text from Wikipedia, licensed CC BY-SA 4.0.
About the Sao Paulo Bristle Tyrant
The Sao Paulo bristle tyrant, or Sao Paulo tyrannulet, is a Near Threatened species of bird in the tyrant flycatcher family Tyrannidae. It is found in Argentina, Brazil, and Paraguay.
Text adapted from Wikipedia, licensed CC BY-SA 4.0.
Easily confused with
Serra do Mar Bristle TyrantPogonotriccus difficilisThe Serra do Mar bristle tyrant is 11 to 11.5 cm (4.3 to 4.5 in) long and weighs about 7 to 8 g (0.25 to 0.28 oz).
Chapman's Bristle TyrantPogonotriccus chapmaniChapman's bristle tyrant is about 12 cm (4.7 in) long and weighs 7 to 8 g (0.25 to 0.28 oz).
Venezuelan Bristle TyrantPogonotriccus venezuelanusThe Venezuelan bristle tyrant is about 11.5 cm (4.5 in) long and weighs 8 to 9 g (0.28 to 0.32 oz).
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