Fig. 8
From: Taxonomic status of grey-headed Yellow Wagtails breeding in western China
Examples of odd male M. flava phenotypes observed in westernmost Xinjiang in 2011. The bird in a shows a plumage consistent with M. f. feldegg, save for a greyish nape that might indicate introgression with grey-headed populations. The bird in b shows a similar plumage but also white supercilium (matching form “superciliaris”). a Ebinur Lake, 14 May 2011 (Alexander Hellquist). b Jiyekexiang, 15 May 2011 (Petter Haldén)