▁since ▁release ▁Tr ends ▁in ▁surv ival ▁rates ▁of ▁the ▁re int rodu ced ▁de er ▁were ▁compared ▁to ▁several ▁different ▁models ▁predict ing ▁surv ival ▁patterns ▁of ▁the ▁re int rodu ced ▁population : ▁one ▁model ▁assumed ▁constant ▁surv iv or ship , ▁another ▁assumed ▁that ▁surv ival ▁would ▁vary ▁with ▁age , ▁a ▁third ▁predicted ▁that ▁surv ival ▁would ▁depend ▁on ▁an ▁individual ▁de er ' s ▁time ▁since ▁release , ▁and ▁the ▁last ▁combined ▁the ▁predictions ▁that ▁age ▁and ▁time ▁since ▁release ▁would ▁affect ▁surv ival . ▁The ▁re int rodu ced ▁population ' s ▁surv ival ▁best ▁matched ▁the ▁model ▁that ▁account ed ▁only ▁for ▁changes ▁in ▁surv ival ▁based ▁on ▁the ▁time ▁since ▁the ▁release ▁of ▁the ▁individuals ▁in ▁that ▁population , ▁which ▁was ▁statist ically ▁about ▁three ▁times ▁more ▁probable , ▁on ▁average , ▁than ▁the ▁other ▁models ▁that ▁were ▁tested . ▁Several ▁possible ▁causes ▁exist ▁for ▁this ▁reduction ▁in ▁surv iv or ship ▁soon ▁after ▁an ▁individual ▁is ▁released ▁into ▁the ▁wild , ▁including ▁the ▁stress ▁induced ▁by ▁re le asing ▁capt ive ▁individuals ▁into ▁the ▁wild ▁and ▁the ▁reduced ▁success ▁of ▁in ex per ien ced ▁moth ers ▁attempting ▁to ▁raise ▁their ▁first ▁young ▁in ▁an ▁un famil iar ▁habitat . ▁Because ▁time ▁since ▁release ▁into ▁the ▁wild ▁significantly ▁affect s ▁the ▁surv ival ▁of ▁this ▁species , ▁this ▁effect ▁needs ▁to ▁be ▁considered ▁when ▁planning ▁for ▁any ▁further ▁releases ▁of ▁capt ive ▁Pers ian ▁fall ow ▁de er . ▁ ▁Current ▁status ▁Currently ,