I think the initial problem for the UK is droppings from wild birds migrating from Europe. I saw a flock of maybe 400 Redwings overhead yesterday, for instance. Once it's into commercial flocks, in particular, then people, boots, tyres and so on come into play. We're not a big commercial operation but our rare breeds are both very rare and have been selectively bred by us for years so their value in that respect means they're virtually irreplaceable.