▁this ▁species ▁vulner able . ▁Population ▁decl ine ▁has ▁to ▁be ▁more ▁than ▁ 3 0 % ▁over ▁ten ▁years ▁or ▁three ▁gener ations ▁for ▁a ▁species ▁to ▁be ▁de emed ▁vulner able . ▁Even ▁though ▁long - bil led ▁p lo vers ▁are ▁not ▁vulner able ▁or ▁threatened ▁now , ▁their ▁population ▁might ▁decl ine ▁rapidly ▁in ▁the ▁future ▁due ▁to ▁the ▁loss ▁of ▁suitable ▁bre eding ▁grounds . ▁Conserv ation ▁efforts ▁should ▁include ▁protection ▁and ▁rest oration ▁of ▁bre eding ▁habit ats . ▁Hab itat ▁rest oration ▁projects ▁can ▁provide ▁new ▁bre eding ▁habit ats ▁through ▁the ▁artificial ▁construction ▁of ▁gra vel ▁banks ▁and ▁p eb ble ▁islands . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Long - bil led ▁p lo ver ▁Little - ring ed ▁p lo ver ▁Long - bil led ▁p lo ver ▁habitat ▁ ▁Category : Char ad ri us ▁Category : B ird s ▁of ▁East ▁Asia ▁Category : B ird s ▁described ▁in ▁ 1 8 6 3 ▁Category : T ax onomy ▁articles ▁created ▁by ▁Pol bot <0x0A> </s> ▁Ku ▁W ai ▁M ing ▁( born ▁ 1 1 ▁September ▁ 1 9 7 3 ) ▁is ▁a ▁Hong ▁Kong ▁spr inter . ▁He ▁competed ▁in ▁the ▁men ' s ▁ 1 0 0 ▁metres ▁at ▁the ▁ 1 9 9 2 ▁Summer ▁Olympics . ▁ ▁References ▁ ▁Category : 1 9 7 3 ▁birth s ▁Category : L iving ▁people ▁Category : A th let es ▁( track ▁and ▁field ) ▁at ▁the