153975 Grey Wagtail Motacilla cinerea Length 18cm. Elegant waterside bird. Strikingly long tail is continually pumped up and down. Sexes are dissimilar. Adult male in summer has blue-grey upperparts and lemon-yellow underparts. Note black bib, white sub-moustachial stripe and white supercilium. Bill is dark, legs are reddish and outer tail feathers are white. Adult female in summer is similar but bib is whitish and variably marked with grey while underparts are paler with yellow colour confined mainly to vent. Winter adults and juveniles are similar to respective summer plumages but with white throats. Voice Utters a sharp chsee-tsit call in flight. Status Favours fast-flowing stony streams and rivers; commonest in N and W.