Dotted among a small flock of sheep in a field in the Scottish Highlands, Luigi and Peaches, two young working dogs with thick white coats, are busy being trained to keep watch on the skies above.
The pair, who descend from the Roman-era Maremma breed reared by shepherds to protect their livestock from wolves, are learning to guard against Scotland's resurgent sea eagles, formally known as white-tailed eagles.