Black_Sea-Eastern_Mediterranean_flyway
The Black Sea–Mediterranean Flyway is a group of well-established routes by which many bird species migrate annually between Palearctic breeding grounds in northern Europe and Asia, and non-breeding habitats in southern Europe and Africa.[1]
This flyway has been studied less than some other major routes. A 2003 study found that population trends for wetland birds using this route had declined by 65% over the last decade, with three times as many species in decline than were evidencing increased numbers.[2] Different taxa use different flight paths, with waders tending to follow the Black Sea and Mediterranean route southwards into Africa while swans, geese and ducks mostly use a northeast / southwest oriented route.[3]