▁was ▁described ▁by ▁H od g son ▁in ▁ 1 8 4 4 , ▁and ▁Fal co ▁at rice ps ▁from ▁Northern ▁India ▁was ▁described ▁by ▁H ume ▁in ▁ 1 8 6 9 . ▁These ▁three ▁species ▁were ▁generally ▁accepted ▁as ▁distinct ▁until ▁around ▁the ▁turn ▁of ▁the ▁century , ▁when ▁all ▁three ▁were ▁l ump ed ▁together ▁with ▁Sund ev all ' s ▁Fal co ▁per egr in ator ▁as ▁Fal co ▁per egr inus ▁per egr in ator . ▁ ▁The ▁sub species ▁name ▁per egr in ator , ▁Latin ▁for ▁a ▁w ander er ▁or ▁habit ual ▁travel er , ▁reflect s ▁its ▁travel ing ▁ability . ▁ ▁The ▁common ▁English ▁name ▁sh ah in ▁should ▁not ▁be ▁confused ▁with ▁the ▁same ▁word ▁in ▁the ▁Ind o - Europe an ▁language ▁Pers ian , ▁the ▁Turk ic ▁language ▁Turkish , ▁and ▁the ▁Af ro asi atic ▁language ▁Arab ic , ▁where ▁it ▁may ▁refer ▁to ▁fal cons ▁or ▁a ▁species ▁of ▁fal con . ▁In ▁the ▁Ind o - Europe an ▁language ▁H indi , ▁sh ah in ▁or ▁sh ah in ▁k oh i ▁( k oh ▁refers ▁to ▁a ▁hill ) ▁refer ▁to ▁the ▁female ▁of ▁the ▁per egr in ator ▁sub species , ▁while ▁males ▁of ▁the ▁sub species ▁are ▁referred ▁to ▁as ▁k oh ila . ▁ ▁Description ▁The ▁sh a he en ▁is ▁a ▁small ▁and ▁powerful - looking ▁fal con ▁with ▁black ish ▁upper parts , ▁r uf ous ▁under parts ▁with ▁fine