Black-capped Pygmy Tyrant
Myiornis atricapillus
The black-capped pygmy tyrant is 6 to 8 cm (2.4 to 3.1 in) long; three individuals weighed 5.5 to 6 g (0.19 to 0.21 oz). It is the smallest passerine in Central America and among the smallest on Earth. Adult males have a black crown that fades to slate gray at its rear and on the nape. They have white lores that continue to a white eye-ring and a black spot by the eye on an otherwise slate gray face. Their back, rump, and uppertail coverts are bright olive green. Their greater and median wing coverts are slate black with olive green tips and their lesser wing coverts are bright olive green. Voice: The black-capped pygmy tyrant's vocalizations are high pitched and similar to calls made by insects and frogs. What is thought to be its song is a "'crreek' or 'tstrreep' " that is often given singly but also in a series. Other vocalizations include "a sharp, reedy tseep or keep which rises in inflection" and a "tsrit" that sounds like a warbler or cricket.
ID text from Wikipedia, CC BY-SA 4.0
Short-tailed Pygmy Tyrant
Myiornis ecaudatus
The short-tailed pygmy tyrant is 6 to 7 cm (2.4 to 2.8 in) long and weighs about 4.2 g (0.15 oz). It is the smallest passerine on Earth. The sexes have the same plumage. Adults of the nominate subspecies have a mostly dark gray head with blackish lores, a prominent white spot above the lores, and a white eye-ring; the last two give a spectacled appearance. Their back, rump, and uppertail coverts are bright olive green. Their wings are dusky with bright olive edges on the flight feathers and tips on the coverts; the latter show as two faint wing bars. Voice: Sources compare the short-tailed pygmy tyrant's vocalizations to sounds made by insects and frogs. The most common is "a soft trilled, purr-like call, sometimes leading into long series of short, squeaky "creek" notes beginning slowly and accelerating, 'cre'e'e'e'e', k'e'e'e'e' ". Another rendition is teeeee-tuuuuur. Its calls include "high, rising treet or peet?
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: Black-capped Pygmy Tyrant and Short-tailed Pygmy Tyrant.