Black-fronted Nunbird
Monasa nigrifrons
The black-fronted nunbird is 26 to 29 cm (10 to 11 in) long and weighs 68 to 98 g (2.4 to 3.5 oz). The adult of the nominate subspecies is mostly sooty black that is darkest around the bill (the "front"). The rear part of the body is blue-gray and the tail blue-black. The bill is red, the eye dark, and the legs black. M. n. canescens is slightly paler and grayer than the nominate. The juvenile of both is a dirty slate gray with irregular reddish marks. Voice: The black-fronted nunbird's song is " a rapid series of melodious upslurred 'clerry' or 'curry' whistles, broken by occasional downslurred 'turra turra' trill". It is often sung as a chorus by several birds.
ID text from Wikipedia, CC BY-SA 4.0
Swallow-winged Puffbird
Chelidoptera tenebrosa
The swallow-winged puffbird is 14 to 15 cm (5.5 to 5.9 in) long and weighs 30 to 41.5 g (1.1 to 1.5 oz). The nominate subspecies has sooty black upperparts with some bluish iridescence. The lower back and rump are white. Its tail is short and black with white tips to the feathers that quickly wear away. The wings are long and pointed. The chin is whitish, the throat grayish, and the breast sooty black fading to gray in its lower part. Its belly is orange-chestnut. The bill is black, the eye dark brown, and the feet dark gray or black. C. t. Voice: The swallow-winged puffbird has a "wittering song often given in flight". Its calls include "'tsi-tsi-tsi' and high clear 'dí-didi dí-didi dí-didi…'."
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: Black-fronted Nunbird and Swallow-winged Puffbird.