Black-chinned Siskin
Spinus barbatus
The black-chinned siskin is 12 to 13 cm (4.7 to 5.1 in) long and weighs about 13 to 20 g (0.46 to 0.71 oz). The species is sexually dimorphic. Adult males have black lores, forehead, and crown. Their face is olive or green with a yellowish wash and a bright yellowish supercilium from behind the eye to the side of the neck. Their nape and back are olive green with thin dark streaks and their rump and uppertail coverts are yellow to yellowish green. Their tail is mostly black with yellow bases on all but the innermost pair of feathers. Their wings have a complicated pattern. Voice: The black-chinned siskin's song is "a loud series of musical phrases and trills" and sometimes includes call notes. Its calls include a "rising tsooeet", an "abrupt chit or chit-tip", a "more subdued tsi-tsi-tsi, together with a more prolonged twittering note", and "a short chup in flight".
ID text from Wikipedia, CC BY-SA 4.0
Yellow-bellied Siskin
Spinus xanthogastrus
The yellow-bellied siskin is 10 to 11.5 cm (3.9 to 4.5 in) long and weighs about 11 to 14 g (0.39 to 0.49 oz). The species is sexually dimorphic. Adult males of the nominate subspecies have a glossy black head, chin, breast, and upperparts. Their tail is mostly glossy black with yellow bases to the outer feathers. Their wings are mostly glossy black with bright yellow bases on the primaries and secondaries. Their lower breast, belly, and undertail coverts are bright yellow with an olive tinge on the flanks. Voice: One description of the yellow-bellied siskin's song is "a fast, bubbly ser. of twitters, buzzy notes, and musical sputterings, almost as if randomly generated". It is "complex and usually with a few high, thin notes mixed with low nasal notes". Its calls include "thin or high-pitched pee or pyee and harsher bziee" notes.
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: Black-chinned Siskin and Yellow-bellied Siskin.