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Message: <blockquote data-quote="Julian Bell" data-source="post: 1710034" data-attributes="member: 28822">I have some experience of Eagle Owls and would regard them as very unlikely "migrants" - at least the population I am familiar with. As they prey on a huge variety of animals and birds they always have something to eat - unlike many nomadic / migratory owl species that eat  a more limited range or seasonally available range of prey. I have found mouse jawbones alongside whole raven heads in the same pellet. The local owls also consume Grey Herons (except the legs) and anything else that moves. I even have suspcions that many species that live or use the area have adapted special techniques to avoid Eagle Owl predation. EO are bound to be an influence on population levels of whatever their prey is.With the various threats and general decrease in population (again my knowledge is restricted to local conditions) it is hard to see how population densities would increase to levels that would force birds that are obviously averse to moving long distances over water.<a href="http://www.naturalbornbirder.com/gallery/Eagle_owl.html" target="_blank">Here are a few of the locals</a></blockquote>