The Eight Meeting of the Conference of the Parties to CMS adopted a recommendation calling on range States, regardless of whether they were Parties to CMS, to develop a MoU to help conserve the endangered grassland bird species of South America and the habitats upon which they depend.
The governments of Argentina, Bolivia, Paraguay and Uruguay therefore agreed to work together towards better conservation of migratory species of grassland birds and developed the MoU text.
Argentina, Paraguay and Uruguay signed the MoU on 26 August 2007.
Brazil, although not a Party to CMS, signed the next day.
Bolivia was the last of the range States to sign the MoU on 23 September 2009.

Signatories to the Southern South American Migratory Grassland Bird Species MoU:
Argentina (26 August 2007)
Brazil (27 August 2007)
Paraguay (26 August 2007)
Uruguay (26 August 2007)
Bolivia (23 September 2009)
In addition, the CMS Secretariat also signed the MoU (26 August 2007).
The Eight Meeting of the Conference of the Parties to CMS adopted a recommendation calling on range States, regardless of whether they were Parties to CMS, to develop a MoU to help conserve the endangered grassland bird species of South America and the habitats upon which they depend. The governments of Argentina, Bolivia, Paraguay and Uruguay therefore agreed to work together towards better conservation of migratory species of grassland birds and developed the MoU text. Argentina, Paraguay and Uruguay signed the MoU on 26 August 2007. Brazil, although not a Party to CMS, signed the next day. Bolivia was the last of the range States to sign the MoU on 23 September 2009.
Signatories to the Southern South American Migratory Grassland Bird Species MoU:
Argentina (26 August 2007)
Brazil (27 August 2007)
Paraguay (26 August 2007)
Uruguay (26 August 2007)
Bolivia (23 September 2009)
In addition, the CMS Secretariat also signed the MoU (26 August 2007).
Southern South American Migratory Grassland Bird Species Memorandum of Understanding