▁has ▁proven ▁that ▁the ▁range ▁extends ▁south ward ▁and ▁reaches ▁the ▁Hu ay amba ▁River , ▁as ▁well ▁as ▁B ajo ▁May o . ▁It ▁had ▁been ▁class ified ▁as ▁vulner able ▁but ▁due ▁to ▁major ▁habitat ▁loss ▁and ▁restricted ▁living ▁space , ▁it ▁is ▁now ▁class ified ▁as ▁Crit ically ▁End anger ed . ▁In ▁October ▁ 2 0 1 2 , ▁it ▁was ▁included ▁in ▁The ▁World ' s ▁ 2 5 ▁Most ▁End anger ed ▁Prim ates ▁list . ▁An ▁increase ▁in ▁def or est ation ▁is ▁leading ▁to ▁the ▁decrease ▁in ▁available ▁living ▁space ▁for ▁this ▁tit i ▁mon key , ▁forcing ▁it ▁to ▁live ▁in ▁sym pat ry ▁with ▁another ▁species ▁of ▁Call ice bus . ▁Yet ▁in ▁some ▁areas , ▁such ▁dr astic ▁def or est ation ▁has ▁resulted ▁in ▁extremely ▁high ▁population ▁density . ▁The ▁Rio ▁May o ▁tit i ▁is ▁better ▁adapted ▁to ▁moder ately ▁populated ▁areas , ▁thus ▁over pop ulation ▁neg atively ▁impact s ▁the ▁species . ▁The ▁for ests ▁the ▁Rio ▁May o ▁tit i ▁lives ▁in ▁are ▁being ▁destroyed ▁for ▁agricult ural ▁purposes , ▁leaving ▁little ▁forest ▁for ▁the ▁mon keys . ▁They ▁were ▁only ▁seen ▁a ▁few ▁times ▁and ▁featured ▁in ▁museum s ▁until ▁ 2 0 0 3 ▁when ▁more ▁research ▁was ▁done ▁on ▁them . ▁In ▁order ▁for ▁this ▁species ▁to ▁surv ive , ▁their ▁for ests ▁need ▁to ▁be ▁protected ▁to ▁avoid ▁over pop ulation . ▁D ifferent ▁conservation ▁groups ▁are ▁working ▁to ▁help ▁P . ▁o