It's purely precautionary. I always said that if bird flu got as far as Germany, I would put the birds inside.

We are taking advice on the vaccinations against avian flu, and in the meantime we will continue to give our six ravens as much care and attention as they need.

The first day was very stressful for them, but now they're happy. When I walked in this morning, Thor -- the one who talks -- said 'Good morning.

They're being kept in a big airy room with lots of light and fresh air. They're doing very well in there.