ym ology ▁Sh a he en ▁and ▁other ▁variations ▁come ▁from ▁Middle ▁Pers ian ▁š ā h ē n ▁( liter ally ▁" ma j estic , ▁king ly ") ▁and ▁the ▁given ▁name ▁Š ā h ē n . ▁Comp are ▁Middle ▁Armen ian ▁ շ ա հ <0xD5> <0xA7> ն ▁( š ah ē n ) ▁and ▁Old ▁Armen ian ▁ <0xD5> <0x87> ա հ <0xD5> <0xA7> ն ▁( Š ah ē n ). ▁It ▁has ▁two ▁mean ings ▁in ▁Pers ian / F arsi : ▁fal con , ▁especially ▁the ▁Barb ary ▁fal con . ▁The ▁second ▁meaning ▁is ▁a ▁pointer ▁of ▁a ▁scale . ▁ ▁Tax onomy ▁The ▁tax on ▁was ▁formally ▁described ▁by ▁Carl ▁Jakob ▁Sund ev all ▁in ▁ 1 8 3 7 ▁as ▁a ▁separate ▁species , ▁Fal co ▁per egr in ator , ▁based ▁on ▁a ▁ju ven ile ▁spec imen ▁caught ▁on ▁a ▁ship ▁between ▁Sri ▁L anka ▁and ▁the ▁Nic obar ▁Islands . ▁Its ▁tax onom ic ▁status ▁as ▁a ▁sub species ▁of ▁Fal co ▁per egr inus ▁has ▁been ▁controvers ial ▁for ▁several ▁years . ▁Am id st ▁conflic ting ▁views ▁by ▁orn ith olog ists ▁in ▁the ▁mid - 1 9 th ▁century , ▁the ▁sh a he en ▁fal con ▁was ▁described ▁as ▁three ▁new ▁species : ▁Fal co ▁sh a he en ▁from ▁south ▁India ▁was ▁described ▁by ▁J erd on ▁in ▁ 1 8 3 9 , ▁Fal co ▁mic r urus ▁from ▁Nep al ▁and ▁Bur ma