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Click here to go back Details of this species in Berneray Status: Alien Invasiveness: Invasive Occurrence: Reported Source: MacDonald and Harrington, 2003 Arrival Date: Introduction: Introduced by natural means Species Notes for this Location: Berneray is likely the first landing point for Mustela vison (American mink) crossing the Sound of Harris. Management Notes for this Location: Location Notes: Impacts: Agricultural: Mustela vison pose threats to crofting in the Western Isles (HMP, 2004a, b). Economic/Livelihoods: Mustela vison have a damaging effect on fisheries, fish farming and tourism, either directly or indirectly (HMP, 2004a, b). Predation: Mustela vison eat eggs, chicks and adult birds from internationally important bird sites in the Western Isles (HMP, 2004a, b). Mink kill in excess of their immediate needs, and hence can wipe out entire tern colonies in some years (Moore et al., 2003). Wader species declined considerably on Berneray following the introduction of American mink. Last Modified: 13/03/2006 12:34:20 p.m.