Over 12,000 pairs (85% of the world's population) of Eleonora's Falcon breed in Greece. They breed along the long rocky coastline including around the Aegean Sea. Its never been confirmed, but judging by the presence of birds around from late spring, through the summer and autumn, several pairs probably breed on Lesvos.
In October, four Eleonora's Falcons were fitted with satellite trackers and released for their southern migration to east Africa. You can track them online here.