ad ri idae . ▁It ▁can ▁be ▁found ▁in ▁Bang l adesh , ▁Bh ut an , ▁Br une i , ▁Camb odia , ▁China , ▁Hong ▁Kong , ▁India , ▁Indones ia , ▁Japan , ▁La os , ▁Malays ia , ▁Mong olia , ▁My an mar , ▁Nep al , ▁North ▁Korea , ▁Russia , ▁South ▁Korea , ▁Sri ▁L anka , ▁Taiwan , ▁Th ailand , ▁and ▁Vietnam . ▁The ▁long - bil led ▁p lo ver ▁is ▁a ▁mig rat ory ▁bird , ▁so ▁it ▁bre eds ▁and ▁sp ends ▁the ▁winter ▁in ▁different ▁parts ▁of ▁its ▁range . ▁This ▁bird ▁can ▁often ▁be ▁sp otted ▁along ▁the ▁sh ores ▁of ▁rivers , ▁streams , ▁in ▁wet lands , ▁and ▁rice ▁fields . ▁It ▁for ages ▁on ▁the ▁sh or eline ▁primarily ▁for ▁aqu atic ▁insect s , ▁insect ▁lar va e , ▁and ▁other ▁in verte br ates . ▁It ▁is ▁difficult ▁to ▁distinguish ▁between ▁male ▁and ▁female ▁individuals ▁because ▁of ▁their ▁similar ▁pl um age . ▁The ▁bre eding ▁season ▁starts ▁at ▁the ▁end ▁of ▁February ▁or ▁early ▁March ▁and ▁ends ▁in ▁July . ▁A ▁male ▁and ▁a ▁female ▁forms ▁a ▁mon og am ous ▁pair ▁and ▁maintain s ▁their ▁territory ▁throughout ▁the ▁bre eding ▁season . ▁A ▁global ▁population ▁survey ▁in ▁ 2 0 1 6 ▁ass essed ▁the ▁long - bil led ▁p lo ver ▁as ▁a ▁species ▁of ▁least ▁concern ▁on ▁the ▁International ▁Union ▁for ▁Conserv ation ▁of ▁Nature ▁( I U CN )