An 'invader species' of salmon that has recently been spotted in Scottish rivers is now being targeted from the air - using a drone.
The pink salmon, which could threaten wild native fish, have already been filmed spawning in the River Ness near Inverness.
Ness District Salmon Fishery Board has now deployed a drone fitted with a camera to spot redds, the nests female salmon create. The team counted 15 redds in a single ...