Bright-rumped Attila
Attila spadiceus
The bright-rumped attila is a large tyrant flycatcher with a big head, hooked and slightly upturned bill and upright stance. It is 7 inches (18 cm) long and weighs 1.4 oz (40 g). The head is olive-green streaked with black, the back is chestnut or olive, the rump bright yellow and the tail brown. The wings are dark brown with two pale wing bars and paler feather edging. The whitish or yellow throat and yellow breast are variably streaked darker. The belly is white becoming yellow near the tail. The iris is red.
ID text from Wikipedia, CC BY-SA 4.0

Cinnamon Attila
Attila cinnamomeus
The cinnamon attila is about 19.5 to 20.5 cm (7.7 to 8.1 in) long and weighs 28 to 45 g (0.99 to 1.6 oz). The sexes have the same plumage. Adults have a deep rufous head, upperparts, and tail. Their wings are mostly deep rufous with blackish primaries. Their wing coverts are dusky with wide rufous edges. Their underparts are mostly cinnamon-rufous with a somewhat yellower belly. They have a reddish brown iris, a black bill, and gray legs and feet. Voice: One of the cinnamon attila's songs is "a loud ascending whistle weary weary weary weer-ry". Another is a "slow, reedy series of 3 or more ascending wheer whistles" that is repeated persistently. Its calls are "a loud ringing hawk-like whistle, pü-puéééeeeear" that also is repeated multiple times and a "whoo-whoo-wheeeyeér" that is similar to calls of other Attila species.
ID text from Wikipedia, CC BY-SA 4.0

Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Bright-rumped Attila and Cinnamon Attila.