death of 1st litter?

Question
my rabbits had their 1st litter on wed, both parent are 6/7 months old. 3 babies were born, 1 seemed to failing like the other 2, but as afew days went past seemed to be okay. well today day 5, all 3 suddenly died. the 2 stronger had grown, started growing fur the smaller one had grown but developmentally was being the other 2. No idea why the whole liiter (3 died). Is it the cold weather too blame?
any advice, appreciated
amanda x

Answer
hi amanda-firstly did you have the buck in the same cage -if so this may be why they died as the buck must not be present with the babys as they are inclined to kill them.
the weather may be to blame but if the cage was solid and plenty of hay inside for the doe to make a nest everything should have been ok
dave.