Worries over tagged Loch Garten osprey Bynack
An osprey raised at a nest site in the Highlands and tracked using satellite tagging technology may have perished in West Africa.
The male bird called Bynack hatched at Loch Garten near Aviemore in May last year and later migrated to Africa.
RSPB Scotland said the osprey had not moved for about 11 days and worry it may have died.
Staff remain hopeful that the lack of movement may be because its tag has slipped off.
In 2009, another young Loch Garten osprey called Nethy was thought to have died after reaching Africa.
The year before, the female's brother Deshar died after making a "navigational error" and missed landfall in the Azores.