Controversially, DEFRA have blacklisted eagle owls and boars as non-native species, leaving them unprotected and classed as unwelcome invaders.  Arguments have been put forward for both species to be accepted: boars were part of the Britain’s fauna until their extinction in the middle ages, and there are suggestions that Eagle owls also lived here in the past, although this involves going much further back in time, when Britain was still part of the European land mass.