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Biological diversity


A species or lower taxon of wild animals of which the entire population or any geographically separate part of the population cyclically and predictably cross one or more national jurisdictional boundaries. (CMS, Art. 1). The word 'cyclically' relates to a cycle of any nature, such as astronomical (circadian, annual etc.), life or climatic, and of any frequency; (ii) The word 'predictably' implies that a phenomenon can be anticipated to recur in a given set of circumstances, though not necessarily regularly in time (CMS, Res. 11.33) (Source: CMS)


Alternative labels:
migratory animal
migratory bird
migratory fish
vagrant species

In other languages

espèce migratrice
мигрирующие виды
especies migratorias
أنواع مهاجرة

Explore content

Follow up the links below to see InforMEA content related to migratory species coming up from several external sources.

Multilateral environment agreements tagged with migratory species

You can see below a list of multilateral environment agreements. Use the links on the right to view the content tagged with migratory species. This includes official treaty texts, decisions, recommendations, and other related informational documents such as publications, annuals, meetings, documents or reports.
Convention on Migratory Species
Stockholm Convention
Agreement on the Conservation of African-Eurasian Migratory Waterbirds
Ramsar Convention
Agreement on the Conservation of Small Cetaceans of the Baltic and North Seas
Agreement on the Conservation of Populations of European Bats

Learning resources


CMS Global Action for Migratory Animals

Video on the Convention on Migratory Species