Tibetan Serin

The Tibetan serin (Spinus thibetanus) or Tibetan siskin is a true finch species (family Fringillidae).

Length (including the tail) of this species is around 12 cm. The Tibetan siskin lacks yellow panels on its wings in all plumages. Adult males have olive-greenish upper parts, yellow underparts, yellowish-green rumps, yellow supercilium and border behind ear-coverts. Wing and tail feathers of this bird species are broadly differentiated by a yellowish-green color. Adult females of this species have black streaking on darker greyish-green upper parts, more clearly defined wing-bars than their male counterparts, paler yellowish throats and black-flanked breasts with streaking. Juveniles are duller green, tinged brownish-buff on upper parts, with duller rumps, buff fringes to greater coverts and paler or heavily streaked underparts.