Black-breasted Puffbird
Notharchus pectoralis
The black-breasted puffbird is 19 to 23 cm (7.5 to 9.1 in) long and weighs between 60 and 69 g (2.1 and 2.4 oz). The plumage is mostly glossy blue-black, with a white collar, cheeks, throat, and belly, a blue-black breast band, and a black tail with white tips on the feathers. The closed wing and rump show narrow white scallops. The flanks are dark gray with buffy marks. The heavy bill is black, as are the feet, and the iris of the eye is dark brown or red. The two sexes are the same, and the plumage of juvenile birds has not been described. Voice: The black-breasted puffbird's song is "10–30 loud 'kwee' whistles followed by 3 or so lower, slower 'whew' whistles ending with a few fading 'wheet-whew' wolf-whistles". It also makes a "rasping 'chah-chah-chah'" call when disputing territory.
ID text from Wikipedia, CC BY-SA 4.0
White-necked Puffbird
Notharchus hyperrhynchus
The white-necked puffbird is about 25 cm (9.8 in) long and weighs 81 to 106 g (2.9 to 3.7 oz).It is mostly glossy black. It has a broad white forehead, throat, upper breast, and most of the belly. A broad black band separates the last two, and a black stripe runs from the beak to the crown, passing through a dark red eye. The white of the throat extends as a fairly broad line around the nape. The lower flanks are barred black and white and the tail is black with narrow white tips to the feathers. The very large bill and the feet are black. Voice: Descriptions of the white-necked puffbird's song include "a long bubbling trill, at a constant pitch or rising slightly, then falling" and "an evenly pitched monotonous trill that lasts 3–5 seconds". It also makes "a descending whistle 'wheeew'" call and "a quiet growl."
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-breasted Puffbird and White-necked Puffbird.