145656 Siberian Stonechat - Saxicola maurus Length 12-13cm Small, compact bird. Similar to European Stonechat Saxicola rubicola; formerly treated as a subspecies of that bird, but now elevated to species status. Diagnostic difference is white, unstreaked rump. When perched, flicks short, dark tail and utters harsh alarm call. Sexes are dissimilar. Adult male has blackish head, white on side of neck, and dark back, feathers fringed brown in winter. Compared to European Stonechat, underparts are paler and less colourful. Adult female is similar but colours are muted. 1st winter bird has streaked sandy brown upperparts and head, and buffish orange underparts. Utters harsh tchak call, like two pebbles knocked together. Song is rapid and warbling. Breeds across much of central Asia and winters further south. Vagrants turn up in western Europe, mainly in autumn.