▁around ▁and ▁feed ▁by ▁themselves ▁shortly ▁after ▁h atch ing . ▁The ▁parents ▁constantly ▁monitor ▁the ▁h atch lings ▁and ▁are ▁always ▁on ▁the ▁look out ▁for ▁any ▁signs ▁of ▁danger . ▁The ▁h atch lings ▁gain ▁body ▁mass ▁at ▁the ▁rate ▁of ▁ 1 ▁gram ▁per ▁day , ▁and ▁they ▁become ▁ready ▁to ▁fly ▁when ▁they ▁are ▁ 4 0 ▁days ▁old . ▁F led gl ings ▁remain ▁together ▁with ▁their ▁parents ▁for ▁a ▁short ▁time ▁before ▁they ▁leave ▁the ▁nest ▁and ▁migr ate ▁to ▁their ▁winter ing ▁grounds . ▁ ▁Long - bil led ▁p lo vers ▁tend ▁to ▁return ▁to ▁the ▁same ▁bre eding ▁for ▁several ▁consecutive ▁years . ▁This ▁indicates ▁that ▁the ▁same ▁pairs ▁occup y ▁the ▁same ▁nest ing ▁sites ▁every ▁year . ▁The ▁pairs ▁tend ▁to ▁be ▁attract ed ▁to ▁the ▁same ▁bre eding ▁sites ▁year ▁after ▁year . ▁They ▁begin ▁to ▁establish ▁territ ories ▁when ▁the ▁area ▁still ▁remains ▁covered ▁with ▁snow , ▁suggesting ▁that ▁they ▁must ▁have ▁previous ▁knowledge ▁of ▁the ▁suit ability ▁of ▁the ▁site . ▁ ▁Conserv ation ▁status ▁ ▁The ▁long - bil led ▁p lo ver ▁is ▁listed ▁as ▁a ▁species ▁of ▁least ▁concern ▁on ▁the ▁IU CN ▁Red ▁List ▁because ▁of ▁its ▁wide ▁distribution ▁and ▁large ▁home ▁range . ▁It ▁has ▁a ▁distribution ▁range ▁that ▁exceed s ▁ 2 0 , 0 0 0 ▁square ▁kilom eters . ▁The ▁global ▁population ▁seems ▁to ▁be ▁decre asing , ▁but ▁the ▁rate ▁of ▁decl ine ▁is ▁not ▁dr astic ▁enough ▁to ▁make