For those of you who want to know exactly what a Raven is (time to get away from all this silliness) I have decided that disclosure is, in this one case, acceptable.
Once you see the photo, you will understand how it the Raven works (and where!).
These can be picked up just north of the Thames near an old building for free if no one is looking
Vic
Aardvarks indeed, whatever happened to using Red Squirrels?