@chiklee , Not sure what would cause that... My rabbit had hers spaced apart too. I think it is just nature. We just don't get the opportunity to watch rabbits birthing very often. Do you know what breed she is? She looks like mine and I have no idea what breed they are.
she is a Flemish giant agouti color this is her last litter she is 3 1/2 now and I think she is tiring out now.