Bare-throated Bellbird
Procnias nudicollis
Voice: The male has one of the loudest calls of any bird—a sharp sound like that of a hammer striking an anvil or a bell. Before making such a call, an individual must take a sharp inhale to increase air pressure in the interclavicular air-sacs surrounding its syrinx. It takes a long time for young males to learn the call, as one such male living in captivity next to an adult P.
ID text from Wikipedia, CC BY-SA 4.0
Bearded Bellbird
Procnias averano
Like other cotingas, the bearded bellbird has a broad hooked-tipped bill, rounded wings, strong legs and a striking appearance. The male is approx 28 cm 11 in long, and weighs 180 g (6+1⁄2 oz). His plumage is white or greyish-white apart from the black wings and warm brown head. He sports a "beard" of un-feathered, black stringy wattles. The female is smaller, at approx. 27 cm (10+1⁄2 in) and 130 g (4+1⁄2 oz). Her upperparts are olive-green (duskier on the head), most of the underparts are yellow streaked with green, and the vent is pure yellow. She lacks the facial wattles ("beard").
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: Bare-throated Bellbird and Bearded Bellbird.