World Migratory Bird Day was initiated in 2006 by the Secretariat of the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) in collaboration with the Secretariat of the Convention on the Conservation of Migratory Species of Wild Animals (CMS).
Originally, the idea of designating a day for migratory birds arose in the United States in 1993, when the US Fish and Wildlife Service, the Smithsonian Migratory Bird Center and the Cornell Laboratory of Ornithology initiated celebrations of the ‘International Migratory Bird Day' (IMBD), which encourages bird festivals and education programmes across the Americas. Although this day was and continues to be successfully celebrated in the western hemisphere, something similar was missing for the rest of the world.
On the occasion of its 10th anniversary in 2005, the AEWA Secretariat initiated the Migratory Waterbird Days (MWD) which were held in Africa, Europe and parts of Asia. As this event was well received in the African-Eurasian region, it was decided to broaden the scope into a commemorative day that celebrates all migrating birds on a global scale.