The East Atlantic Flyway The East Atlantic Flyway is a migration route for 90 million migrating birds annually. is a migration route for 90 million migrating birds annually. Important key sites on the flyway include Lake Ladoga in Russia, Matsalu National Park Matsalu National Park is a nature reserve in SW of Estonia. in Estonia, Nemunas Delta in Lithuania, the Wadden Sea in the Netherlands, Vendee Reserve in France, Donana National Park in Spain, Merja Serga in Morocco, Banc d'Arguin National Park in Mauritania, Diawling-Djoudj in Senegal, Mauritania, Saloum-Niumi in Senegal Gambia, Archipel Bijagos in Guinea-Bissau.