Taking into consideration the unfavorable conservation status of the Siberian crane (Leucogeranus leucogeranus) and the fact that the species has the longest migration route of all crane species ranging from breeding areas in the Arctic regions of Asia to wintering grounds in southern Asia, the range states acknowledged that the species would benefit from international cooperation between the countries.
Therefore, as the first one to be conducted under the CMS, an Article IV agreement was concluded and entered into effect on 1 July 1993 and was later revised in January 1999.

Signatories to the Siberian Crane MoU:
Azerbaijan (13 December 1998)
India (13 December 1998)
Islamic Republic of Iran (13 December 1998)
Kazakhstan (13 December 1998)
Pakistan (13 December 1998)
Turkmenistan (13 December 1998)
Uzbekistan (13 December 1998)
China (16 April 1999)
Russian Federation (4 June 2002)
Mongolia (29 April 2004)
Afghanistan (22 June 2006)
In addition, the following organizations have signed the MoU:
CMS Secretariat (13 December 1998)
International Crane Foundation (13 December 1998)
Wild Bird Society of Japan (18 May 2000)
Wetlands International (May 2007)
Cracid and Crane Breeding and Conservation Centre (May 2007)
Taking into consideration the unfavorable conservation status of the Siberian crane (Leucogeranus leucogeranus) and the fact that the species has the longest migration route of all crane species ranging from breeding areas in the Arctic regions of Asia to wintering grounds in southern Asia, the range states acknowledged that the species would benefit from international cooperation between the countries. Therefore, as the first one to be conducted under the CMS, an Article IV agreement was concluded and entered into effect on 1 July 1993 and was later revised in January 1999.
Signatories to the Siberian Crane MoU:
Azerbaijan (13 December 1998)
India (13 December 1998)
Islamic Republic of Iran (13 December 1998)
Kazakhstan (13 December 1998)
Pakistan (13 December 1998)
Turkmenistan (13 December 1998)
Uzbekistan (13 December 1998)
China (16 April 1999)
Russian Federation (4 June 2002)
Mongolia (29 April 2004)
Afghanistan (22 June 2006)
In addition, the following organizations have signed the MoU:
CMS Secretariat (13 December 1998)
International Crane Foundation (13 December 1998)
Wild Bird Society of Japan (18 May 2000)
Wetlands International (May 2007)
Cracid and Crane Breeding and Conservation Centre (May 2007)
Siberian Crane Memorandum of Understanding