Locustella fasciolata Kaup, 1829

The largest Locustella, strong- billed and with longish graduated tail with pionted faether tips, and unstreaked plumage. Nominate race is warm olive- brown above, more tawny on rump, tinged greyer on top of head; side of head olive- brown, darker lores and distinct whitish supercilium, cheek mottled grey- buff; upperwing- coverts, tertials and edges of flight- feathers warm olive- brown, uniform with mantle, tail dark tawny- brown; whitish- below, washed grey- brown across breast, throat and upper breast usually with dusky mottling; flanks olive- brown, undertail- coverts cinnamon- buff; iris dark brown or mid- brown; bill dark brown or blackish above, greyish- flesh or pale grey- brown with darker tip below; legs flesh- pink or flesh- yellow to pale brown. Sexes alike. Juvenile is darker above than adult, upperparts often distinctly russet, supercilium, cheek and underparts washed olive- yellow, more prominent dark brown spotting from chin to breast. Race amnicola is slightly warmer above than nominate, and tinged buffier below.