ging ▁two ▁ch icks ▁each . ▁Bre eding ▁success , ▁and ▁proport ions ▁of ▁pairs ▁that ▁raised ▁two ▁ch icks ▁each , ▁was ▁similar ▁in ▁each ▁flo od plain . L ittle ▁is ▁known ▁about ▁the ▁dise ases ▁and ▁par as ites ▁of ▁the ▁sar us ▁c rane , ▁and ▁their ▁effects ▁on ▁wild ▁bird ▁populations . ▁A ▁study ▁conducted ▁at ▁the ▁Rome ▁zoo ▁noted ▁that ▁these ▁birds ▁were ▁resist ant ▁to ▁anth ra x . ▁End op ar as ites ▁that ▁have ▁been ▁described ▁include ▁a ▁trem at ode , ▁O pis th or his ▁d end rit icus ▁from ▁the ▁li ver ▁of ▁a ▁capt ive ▁c rane ▁at ▁the ▁London ▁zoo ▁and ▁a ▁Cy clo co el id ▁( Al lo py ge ▁ant ig ones ) ▁from ▁an ▁Australian ▁bird . ▁Like ▁most ▁birds , ▁they ▁have ▁bird ▁l ice ▁and ▁the ▁species ▁recorded ▁include ▁He le onom us ▁la very i ▁and ▁Est hi opter um ▁indic um . ▁ ▁In ▁capt ivity , ▁sar us ▁c ran es ▁have ▁been ▁known ▁to ▁live ▁for ▁as ▁long ▁as ▁ 4 2 ▁years . ▁Prem ature ▁adult ▁mort ality ▁is ▁often ▁the ▁result ▁of ▁human ▁actions . ▁Acc ident al ▁poison ing ▁by ▁mon oc rot oph os , ▁ch lor py rif os ▁and ▁di eld rin - tre ated ▁se eds ▁used ▁in ▁agricult ural ▁areas ▁has ▁been ▁noted . ▁Ad ult s ▁have ▁been ▁known ▁to ▁fly ▁into ▁power ▁lines ▁and ▁die ▁of ▁elect roc ution