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The Convention on Migratory Species

The global treaty to conserve migratory species of wild animals.

A huge flock of Red Knot on a nesting site.
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What is the Convention on Migratory Species (CMS)?

CMS, part of the United Nations Environment Programme, is the main global treaty designed to conserve migratory species. It sets out ways for Governments and other stakeholders to help all wild animals that regularly and predictably migrate across one or more national boundaries. The implementation of these actionsis supported via further agreements linked to the treaty.

View The CMS Website.

A pair of Swallows perched on a lichen covered branch.

What is needed now?

The CMS gives listed migratory bird species significant protection in the countries which have signed up. They are also protected through linked agreements, such as the African-Eurasian Waterbird Agreement, thematic working groups and Raptors Memorandum of Understanding, such as on the illegal killing of birds and on energy infrastructure, and species working groups, such as on African-Eurasian land birds and on African Eurasian Vultures. This robust framework will be enhanced further with the establishment of the World Coastal Forum, the Lead Task Force and conservation of ecological networks of key areas. Now it is a question of implementation, implementation, implementation. 

A side view of an Asian Vultures head with it's mouth open.

How is the RSPB involved?

RSPB is a national partner of BirdLife International and represents the BirdLife Partnership at the regular meetings of CMS and its various linked agreements and groups. We make sure expertise of the Partnership is fed into the decisions of these intergovernmental agreements and support national Partners to encourage their governments to implement these decisions to improve conservation of migratory birds.

A lone Lapwing chick stood in a meadow.

What does the RSPB want to see from the CMS?

By signing up to the CMS and its linked agreements, countries have agreed to tackle many of the urgent matters facing our migratory birds. Now we want to see a concerted and coordinated implementation of the treaty by governments and other stakeholders. For this to happen the political will and finance must be mobilised accordingly.

Three Swifts mid flight overhead against a pink sunset.
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