▁adult s , ▁but ▁have ▁a ▁brow ner ▁upper parts , ▁cre amy ▁rather ▁than ▁white ▁under parts ▁and ▁lack ▁the ▁dark ▁thro at . ▁ ▁Distribution ▁and ▁movements ▁The ▁red - ne ck ed ▁bu zz ard ▁occurs ▁in ▁a ▁broad ▁band ▁running ▁from ▁Maur it ania ▁south ▁to ▁Liber ia ▁then ▁east wards ▁to ▁Eth iop ia ▁and ▁U g anda , ▁as ▁well ▁as ▁south ▁along ▁the ▁G ulf ▁of ▁Guinea ▁coast ▁through ▁Gab on ▁to ▁the ▁Democratic ▁Republic ▁of ▁Congo ▁and ▁north - e astern ▁Ang ola . ▁ ▁The ▁red - ne ck ed ▁bu zz ard ▁is ▁a ▁partial ▁migr ant , ▁the ▁northern ▁populations ▁may ▁be ▁completely ▁migr ant ▁which ▁leave ▁the ▁sav anna ▁following ▁the ▁ra ins ▁and ▁spend ▁the ▁dry ▁season ▁to ▁the ▁south ▁along ▁the ▁edge ▁of ▁the ▁main ▁forest ▁zone . ▁ ▁Hab itat ▁The ▁red - ne ck ed ▁bu zz ard ▁pre fers ▁forest ▁edges ▁and ▁clear ings , ▁including ▁those ▁within ▁secondary ▁and ▁primary ▁for ests ▁but ▁it ▁occurs ▁in ▁cultiv ated ▁areas ▁and ▁is ▁generally ▁absent ▁from ▁the ▁main ▁areas ▁of ▁low land ▁rain for est ▁up ▁to ▁an ▁alt itude ▁of ▁ 2 , 5 0 0 ▁metres . ▁ ▁Hab its ▁The ▁red - ne ck ed ▁bu zz ard ▁normally ▁hun ts ▁by ▁sitting ▁in ▁wait ▁on ▁a ▁per ch , ▁sc anning ▁the ▁ground ▁for ▁pre y ▁which ▁is ▁caught ▁by ▁a ▁swo op ing ▁d ive ▁down ▁on ▁to ▁the ▁pre y .