Lemon-throated Barbet
Eubucco richardsoni
The "lemon-throated" barbet is approximately 15.5 cm (6.1 in) long and weighs 24.5 to 34 g (0.86 to 1.20 oz). The male of the nominate subspecies has a red crown, gray-blue nape, and green upperparts. Its throat is yellow, the breast orange-red, and the belly and flanks greenish with dark streaks. The female is duller, with a gray-green crown, nape, and upperparts. Its throat is bluish, the breast orange-gold, and the underparts bluish yellow with dark streaks. The male E. r. nigriceps has a black crown and both sexes have blue-green upperparts. The "flame-throated" barbet is 14.5 to 15. Voice: The songs of the four lemon-throated barbet subspecies do not differ substantially. Their song is "soft double or usually triple 'hoo' notes in fast, trill-like series" . Its calls are "various grunts and snarls" .
ID text from Wikipedia, CC BY-SA 4.0

Red-headed Barbet
Eubucco bourcierii
Male red-headed barbet subspecies except E. b. occidentalis range in weight from 30 to 41 g (1.1 to 1.4 oz). Females except occidentalis weigh 31 to 38 g (1.1 to 1.3 oz). Male occidentalis weigh 37.8 to 45.1 g (1.33 to 1.59 oz) and females 37.8 to 43.7 g (1.33 to 1.54 oz). Males have a red head, an orange to yellow breast, and a white belly. A white collar separates the head from the olive green back. The amount of red on the throat and chest and the width of the orange-yellow breast band vary among the subspecies. Voice: The red-headed barbet's song has been described as "a resonant, ventriloquial, somewhat toad-like trill krrrrrrrrrrr" . Some calls have been described as "grunts and snarls" .
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: Lemon-throated Barbet and Red-headed Barbet.