Blue-billed Black Tyrant
Knipolegus cyanirostris
The blue-billed black tyrant is 14.5 to 15 cm (5.7 to 5.9 in) long. Adult males are almost entirely glossy black but for faint white edges on the underside of their remiges. Adult females have mostly rufous-brown upperparts. Their crown is a brighter rufous, their rump rufous, and their tail coverts bright cinnamon. Their wings are blackish with buff to cinnamon edges on the coverts that show as two wing bars. Their tail is dusky with rufous edges to the feathers. Their underparts are mostly whitish to yellowish white with heavy blackish brown streaks and their crissum is cinnamon-rufous. Voice: The blue-billed black tyrant is not highly vocal. Its call is an "extr. high, staccato whic".
ID text from Wikipedia, CC BY-SA 4.0
Crested Black Tyrant
Knipolegus lophotes
The crested black tyrant is 20 to 21 cm (7.9 to 8.3 in) long. Unique in its genus, it has a long thin crest. The sexes have the same plumage; males are slightly larger than females. Adults are almost entirely glossy blue-black. Their remiges have white bases that are conspicuous in flight but usually not visible at rest. Both sexes have a dark red or reddish-brown iris, a black bill, and black legs and feet. The crested black tyrant and the phainopepla (Phainopepla nitens), a member of the silky-flycatcher family Ptiliogonatidae, are almost alike in appearance. Voice: As of April 2025 xeno-canto and the Cornell Lab of Ornithology's Macaulay Library each had nine recordings of crested black tyrant vocalizations; one of them was in both. The species is usually silent, but its flight song is a "very high téetwee-twee-twee (middle twee lowest pitched)".
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Blue-billed Black Tyrant and Crested Black Tyrant.