Great Iora Aegithina lafresnayei is uncommon in lowland forests in Xishuangbanna Prefecture, Yunnan; also reported western Yunnan around Gaoligong Mountains. Larger than and lacks wing bars of Common Iora A. tiphia. Males usually blackish above (usually yellow forehead), bright lemon-yellow below; females olive-green above, with dark wings and eyes particularly prominent; juveniles still duller with olive wash on underparts. Bill long, pointed, and silvery grey; feet grey. Iris mostly dark, but may appear pale at close range (although never as pale as Common Iora). Song a loud, whistled series of about six to eight ascending notes, repeated continuously. Various whistling and chirring calls. — Craig Brelsford
Daniel Bengtsson served as chief ornithological consultant for Craig Brelsford’s Photographic Field Guide to the Birds of China, from which this species description is drawn.