Hi my kits have all just started to open thier eyes mummy had 7 this litter!!!! I e just been to check on them in my daughters room and found one outside the nest upside down legs sticking out weirdly and shaking......mum has comforted it and it can move but just doesn't look right.... I've placed it back in the nest for now as it looks weak .....what's the best thing to do ....help.....