Other raptor species found in the UK such as the kestrel, hen harrier, goshawk, sparrowhawk, tawny owl, and barn owl are widely distributed in Scotland, although the little owl is confined to the south. Buzzards have displayed a remarkable resilience, having recovered from human persecution and the myxomatosis epidemic of the 1950s, which reduced their food supply. Numbers more than trebled between 1978 and 1998. At the other end of the population scale, a single pair of snowy owls bred on Fetlar from 1967 to 1975.