Verm X is a worm preventative, contains lots of herbs, Flubenvet is a curative.
Ex bats can live 3 to 4 years, but the breed produces loads of eggs and are auto sexed, year 3 and 4 not a lot of eggs.
Sooty, a Scot's Dumpy, is staying inside the house quite a bit as she is moulting, this also includes scales on legs.
I have a Haynes manual on chickens, which is very helpful on all aspects of chicken keeping with lots of pictures.