Studies of Swedish ospreys showed that females tend to migrate to Africa earlier than males. More stopovers are made during their autumn migration. The variation of timing and duration in autumn was more variable than in spring. Although migrating predominantly during the day, they sometimes fly in the dark hours, particularly in crossings over water and cover on average per day with a maximum of per day. European birds may also winter in South Asia, as indicated by an osprey tagged in Norway being monitored in western India. In the Mediterranean, ospreys show partial migratory behaviour with some individuals remaining resident, whilst others undertake relatively short migration trips.
Studies of Swedish ospreys showed that females tend to migrate to Africa earlier than males. More stopovers are made during. their autumn migration. The variation of timing and duration in autumn was more variable than in spring. Although migrating predominantly during the day they sometimes fly in the dark hours, particularly in crossings over water and cover on average per day with a maximum of per day. European birds may also winter in South Asia, as indicated by an osprey tagged in Norway being monitored in western India. In ,the Mediterranean, ospreys show partial migratory behaviour with some individuals remaining resident, whilst others undertake relatively short migration trips