▁completely ▁or ▁largely ▁restricted ▁to ▁the ▁Central ▁Asian ▁Fly way ▁range . ▁ ▁In ▁addition , ▁the ▁bre eding ▁range ▁of ▁some ▁species ▁including ▁the ▁ ▁crit ically ▁end anger ed ▁- ▁Si ber ian ▁c rane , ▁sl ender - bil led ▁cur le w , ▁soci able ▁lap wing , ▁sp oon - bil led ▁sand pi per ▁and ▁ ▁end anger ed ▁- ▁red - bre asted ▁go ose , ▁Nord mann ' s ▁gre ens h ank , ▁white - head ed ▁du ck ▁and ▁vulner able ▁- ▁spot - bil led ▁pel ican , ▁Dal mat ian ▁pel ican , ▁less er ▁white - front ed ▁go ose , ▁mar bled ▁du ck , ▁re lict ▁g ull , ▁and ▁ ▁near - th re aten ed ▁- ▁black - wing ed ▁pr atin cole , ▁fer ru gin ous ▁du ck , ▁corn ▁cra ke ▁and ▁Asian ▁dow itch er ▁are ▁largely ▁restricted ▁to ▁the ▁region ▁although ▁the ▁non - bre eding ▁ranges ▁overlap ▁with ▁ad jo ining ▁fly ways . ▁ ▁Conserv ation ▁ ▁Regional ▁co operation ▁among ▁the ▁Central ▁Asian ▁Fly way ▁states ▁is ▁undert aken ▁to ▁promote ▁the ▁conservation ▁of ▁mig rat ory ▁water bird s ▁and ▁their ▁habit ats . ▁This ▁includes ▁various ▁international ▁convent ions ▁including ▁Central ▁Asian ▁Water bird s ▁Fly way ▁Action ▁Plan , ▁Convention ▁on ▁the ▁Conserv ation ▁of ▁Mig rat ory ▁Species ▁( C MS ), ▁Ag re ement ▁on ▁the ▁Conserv ation ▁of ▁African - E uras