World Bird List

Species factsheet
Brown-backed Woodpecker (Dendropicos obsoletus)

Order: Dendropicos obsoletus
Family: Woodpeckers (Picidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
obsoletus Senegal and Gambia to s Sudan and w Uganda south to s Cameroon and ne DR Congo
heuglini e Sudan to n Ethiopia
ingens s Ethiopia to Uganda and c Kenya
crateri n Tanzania