▁seen ; ▁the ▁c rane ' s ▁long , ▁p ink ▁legs ▁trail ▁behind ▁them . ▁This ▁bird ▁has ▁a ▁grey ▁ear ▁cover t ▁patch , ▁orange - red ▁ir ises , ▁and ▁a ▁green ish - gre y ▁bill . ▁Ju ven iles ▁have ▁a ▁yellow ish ▁base ▁to ▁the ▁bill ▁and ▁the ▁brown - gre y ▁head ▁is ▁fully ▁fe ather ed . ▁ ▁The ▁bare ▁red ▁skin ▁of ▁the ▁adult ' s ▁head ▁and ▁neck ▁is ▁br ighter ▁during ▁the ▁bre eding ▁season . ▁This ▁skin ▁is ▁rough ▁and ▁covered ▁by ▁pap illa e , ▁and ▁a ▁narrow ▁area ▁around ▁and ▁behind ▁the ▁head ▁is ▁covered ▁by ▁black ▁br ist ly ▁fe athers . ▁The ▁sex es ▁do ▁not ▁differ ▁in ▁pl um age , ▁although ▁males ▁are ▁on ▁average ▁larger ▁than ▁females ; ▁males ▁of ▁the ▁Indian ▁population ▁can ▁att ain ▁a ▁maximum ▁height ▁around ▁, ▁making ▁them ▁the ▁world ' s ▁tall est ▁ext ant ▁flying ▁bird . ▁The ▁weight ▁of ▁nomin ate ▁race ▁individuals ▁is ▁, ▁while ▁five ▁adult ▁A . ▁a . ▁sh ar pi i ▁aver aged ▁. ▁Ac ross ▁the ▁distribution ▁range , ▁the ▁weight ▁can ▁vary ▁from ▁, ▁height ▁typically ▁from ▁, ▁and ▁wings pan ▁from ▁. ▁ ▁While ▁individuals ▁from ▁northern ▁populations ▁are ▁among ▁the ▁heav iest ▁c ran es , ▁alongside ▁the ▁red - c rown ed ▁and ▁w att led ▁c ran es , ▁and ▁the ▁largest ▁in ▁their ▁range , ▁birds ▁from ▁Australia ▁tend ▁to ▁be ▁smaller . ▁In