Dalat Bush Warbler Locustella idonea

Skulky and secretive speciality of the Kontum and Dalat Plateaus, in Vietnam’s central highlands. Like other Locustella warblers, much more easily heard than seen: listen for its buzzy, repetitive “bizee, bizee, bizee, bizee”, typically given from within a dense clump of grasses or shrubbery. A patient birder, with some luck, may be rewarded with a brief glimpse of this elusive and range-restricted songster in its tangled haunts--a drab brown bird with a white throat and weak eye-ring. Formerly regarded as a subspecies of Russet Bush Warbler (and under which it may be listed under older field guides).