"The trouble is that one eagle owl is very much like another eagle owl, " he said.

BBC: Eagle owl returned to owner

Efforts are being made to capture an eagle owl in Inverness.

BBC: Efforts to capture large owl in Inverness

The species of birds confirmed as poisoned and included in the incidents are red kite, buzzard, golden eagle, tawny owl, and peregrine falcon.

BBC: Red Kite

Escaped eagle owls have previously been caught in Inverness in 2009 and in 2006, when an owl was seen feeding from bird tables in people's gardens.

BBC: Efforts to capture large owl in Inverness