Bronze-green Euphonia
Euphonia mesochrysa
The bronze-green euphonia is 9 to 10 cm (3.5 to 3.9 in) long and weighs 12 to 15 g (0.42 to 0.53 oz). It is a rather drab euphonia with a thick stubby bill. The species is sexually dimorphic. Adult males of the nominate subspecies have a bright yellow forehead with a thin dark olive band below it. Their mid-crown is olive, their rear crown grayish, and their nape and the rest of their face olive. Their upperparts are olive with a strong gray-blue gloss. Their upperwing coverts are olive-green and their primary coverts blackish. Voice: One description of the bronze-green euphonia's song is "2 clear notes followed by a musical trill, tee-teeu-trrrrrt". Another is "usually a whistled note followed by one or more ringing rattles, for example peew brrrrrrr brr brr". Its call is "a distinctive, gravelly treeuh, treeuh".
ID text from Wikipedia, CC BY-SA 4.0

Fulvous-vented Euphonia
Euphonia fulvicrissa
The fulvous-vented euphonia is 9 to 10 cm (3.5 to 3.9 in) long and weighs about 10 to 13 g (0.35 to 0.46 oz). It is a small euphonia. The species is sexually dimorphic. Adult males of the nominate subspecies have a small lemon-yellow forehead; the patch extends to just above the eye. The rest of their crown and their face, nape, throat, chest, and upperparts are glossy blue-black. Their flight feathers are dusky with a blue-black tinge. The upper side of their tail is blue-black and the underside dark gray with white inner webs on the outer two pairs of feathers. Voice: The fulvous-vented euphonia's song is "1–3 soft, chattery rattles followed by 1–2 short, complex and squeaky phrases that rise in pitch, e.g. du, d’u’u’u-d’u’u’u spze’e’t’tic, spze’e’t’tic...du’u, d’u’u’u-d’u’u’u’ spze’e’t’tic... and so on".
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: Bronze-green Euphonia and Fulvous-vented Euphonia.