▁plants , ▁grass ▁sho ots ▁as ▁well ▁as ▁se eds ▁and ▁gra ins ▁from ▁cultiv ated ▁cro ps ▁such ▁as ▁ground n uts ▁and ▁c ere al ▁cro ps ▁such ▁as ▁rice . ▁In ▁the ▁dry ▁season , ▁c ran es ▁f lock ing ▁in ▁S out heast ▁Asian ▁wet lands ▁are ▁in ▁areas ▁with ▁an ▁abund ance ▁of ▁Ele och aris ▁d ul cis ▁and ▁E . ▁spir alis , ▁both ▁of ▁which ▁produce ▁tub ers ▁on ▁wh ic n ▁the ▁c ran es ▁are ▁known ▁to ▁feed . ▁In ▁their ▁bre eding ▁grounds ▁in ▁north - e astern ▁Australia , ▁is ot op ic ▁anal ys es ▁on ▁mol ted ▁fe athers ▁revealed ▁sar us ▁c rane ▁di ets ▁to ▁compr ise ▁a ▁great ▁divers ity ▁of ▁veget ation , ▁and ▁restricted ▁to ▁a ▁narrow ▁range ▁of ▁tro ph ic ▁levels . ▁ ▁Court ship ▁and ▁bre eding ▁▁ ▁Sar us ▁c ran es ▁have ▁loud , ▁tr ump eting ▁calls . ▁These ▁calls ▁are , ▁as ▁in ▁other ▁c ran es , ▁produced ▁by ▁the ▁el ong ated ▁tra che a ▁that ▁form ▁co ils ▁within ▁the ▁s ternal ▁region . ▁P airs ▁may ▁indul ge ▁in ▁spect ac ular ▁displays ▁of ▁calling ▁in ▁un ison ▁and ▁post uring . ▁These ▁include ▁" dan cing " ▁movements ▁that ▁are ▁performed ▁both ▁during ▁and ▁outside ▁the ▁bre eding ▁season ▁and ▁involve ▁a ▁short ▁series ▁of ▁jump ing ▁and ▁bow ing ▁movements ▁made ▁as ▁one ▁of ▁the ▁pair ▁circles ▁around ▁the ▁other