The ferret, Mustela putorius furo is descended from the European polecat. It is a large mustelid, larger than a stoat and varying in colour from dark brown to yellowish-white. Some animals show the polecat's masked face and distinctive pelage pattern.
Ferrets were originally introduced into the Outer Hebrides to catch rabbits and a feral population has become established from escaped and deliberately released animals.
Feral ferrets will take domestic poultry, but there biggest impact is on ground nesting birds. The significance of the level of predation on rare bird species is unknown.
Information and Identification Sheets: Feral Ferret