subspecies- thunbergi, bema, melanogrisea

Very variable, mainly greenish and yellow wagtail; many races and hybrids occur; only wagtail with olive green or brownish mantle, back, rump  (brownishbacked Forest has unmistakable wing, breast pattern); relatively shorter tail; yellow underparts, vent (Citrine has white vent); two wing bars; breeding males have from greenish yellow to dark grey crowns, ear coverts; non-breeding and females brownish, with straight, pale supercilium (Citrine has curved); whitish or yellowwashed underparts; very gregarious in winter; less undulating wagtail flight.