We have had 2 Guineas since April. They are hardy little chaps; before they came to us they were in a rescue centre where they were outside all year. However, even though the hutch is in a sheltered spot, I think they could do with a cover of some kind to keep out the rain etc. Our hutch isnt one of the standard sizes, and I can't seem to find a hutch cover to fit 125 cm length.. anyone got any experience of this sort of thing ?