The snowy owl first appeared on the islands in 2003
A male snowy owl has returned to the Western Isles for a seventh year in search of a mate.
RSPB Scotland said the large white owl first appeared on the islands in 2003 after possibly flying from as far as North America.
In 2008, birdwatchers' hopes of snowy owls breeding in the UK for first time in more than 30 years were raised when the bird was joined by a female.
However, the pair were later spotted 50 miles apart.
The last pair of snowy owls to breed in the UK was on Shetland in 1975.