Mine are usually all outdoor buns, but Joey and BB have been inside since BB had an op just before Xmas.
I love having them in, but tbh they're ready to go back out as soon as the temperatures rise high enough - they are bored inside and BB's nose barely leaves the window!
I've felt awful for the other 6 outside when it's -7 degrees, and have been eyeing up Dave's garage and plotting how to bring in the others:lol:
I go down to the sheds at 11pm each night and they've all been well snuggled up together and have been fairly warm apart from their ears.
When they get old or frail or if they lose their partner in winter I'm more likely to bring them in whilst it's this cold, but all my buns love the outside too much for me to justify bringing them in at the mo.