- normal ▁ra inf all ▁that ▁year . ▁The ▁ch icks ▁are ▁fed ▁by ▁the ▁parents ▁for ▁the ▁first ▁few ▁days , ▁but ▁are ▁able ▁to ▁feed ▁independently ▁after ▁that ▁and ▁follow ▁their ▁parents ▁for ▁food . ▁When ▁al ar med , ▁the ▁parent ▁c ran es ▁use ▁a ▁low ▁kor r - rr ▁call ▁that ▁signals ▁ch icks ▁to ▁free ze ▁and ▁lie ▁still . ▁Young ▁birds ▁stay ▁with ▁their ▁parents ▁until ▁the ▁subsequent ▁bre eding ▁season . ▁In ▁capt ivity , ▁birds ▁bre ed ▁only ▁after ▁their ▁fifth ▁year . ▁The ▁sar us ▁c rane ▁is ▁widely ▁believed ▁to ▁pair ▁for ▁life , ▁but ▁cases ▁of ▁" div or ce " ▁and ▁mate ▁replacement ▁have ▁been ▁recorded . ▁ ▁Mort ality ▁factors ▁▁ ▁E gg s ▁are ▁often ▁destroyed ▁at ▁the ▁nest ▁by ▁j ung le ▁( Cor v us ▁mac ror h yn chos ) ▁and ▁house ▁c rows ▁( C . ▁splend ens ) ▁in ▁India . ▁In ▁Australia , ▁sus pected ▁pred ators ▁of ▁young ▁birds ▁include ▁the ▁d ingo ▁( Can is ▁d ingo ) ▁and ▁fo x ▁( V ul pes ▁vul pes ), ▁while ▁bra h min y ▁k ites ▁( H ali ast ur ▁ind us ) ▁have ▁been ▁known ▁to ▁take ▁eggs . ▁Rem oval ▁of ▁eggs ▁by ▁far mers ▁( to ▁reduce ▁c rop ▁damage ) ▁or ▁children ▁( in ▁play ), ▁or ▁by ▁migr ant ▁labour ers ▁for ▁food ▁or ▁opportun istic ▁egg ▁collection ▁during ▁tri ps ▁to ▁collect ▁forest ▁resources