World Bird List

Species factsheet
Lesser Swamp Warbler (Acrocephalus gracilirostris)

Order: Acrocephalus gracilirostris
Family: Reed Warblers & Allies (Acrocephalidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
neglectus w Chad
tsanae nw Ethiopia
jacksoni ne DR Congo, s Sudan, Uganda and w Kenya
parvus sw Ethiopia to n Tanzania, Rwanda and Burundi
leptorhynchus e Ethiopia to e South Africa
winterbottomi e Angola to n Zambia and sw Tanzania
cunenensis sw Angola and n Namibia to w Zimbabwe
gracilirostris s Namibia, South Africa, se Zimbabwe and s Mozambique