Identification: Compared to Eastern Yellow Wagtail and Grey Wagtail, key feature to look out for in non-breeding individuals is the supercilium wrapping around ear coverts and connecting to throat, creating the appearance of a distinct, isolated "cheek patch". Some may retain some or all of their breeding plumage through the winter – in such birds, much yellow may remain on the head, including forehead and ear-coverts, which are brown in Eastern Yellow. Upperparts are more grey compared to Eastern Yellow Wagtail, usually lacking olive tones, especially on the rump.