My queen has 7 week old kittens. She is semi-feral, and for the last few weeks has been rearing them in a heated out-building that has a cat flap that we cleared for her. The kittens are now used to us, don't run when we approach, in fact run to us when there is food about. The mother tolerates our presence, but will usually run out of the room when we approach or enter. However, the kittens are both active and out of the nest and going outside - she is very nervous and has taken to moving them to the unheated basement at night. While I am happy there are at least under shelter. There are a couple of Toms around - could these be causing the worry? So - now the kittens are both eating solids, we could bring them indoors. However, these cats will stay with us once grown up, and I have been reading that between 5 and 20 weeks it's the crucial period for their integration in the group their mother has been socialising in - she only recently adopted us and presented us with kittens. So - would it be prudent to bring the kittens inside and remove completely from mother, do the same but give the mother a chance to visit - she does come in the house to eat or leave them where they are?