infant rabbits dying

So I went to go feed my husbands meat rabbits some grass and found 2 dead infants and one dying infant. They already have hair and are hopping around, but about the size of a fist. I don't know their ages. Our rabbits live community style, with 3 generations in a fenced area, and they were the smallest. We feed them rabbit pellets and grass from the yard with oregano/radish/mint weeds mixed in. The last week has been really hot, but it rained the last 2 days. Today we had a big downpour of rain and two of the dead rabbits are under the shelters.

Is it possible they were trampled to death? Or could it be something else? I feel really bad and don't want to keep raising rabbits if they die from poor husbandry reasons. The other rabbits their size seem to be doing fine.

Could have been trampled or it could have been respiratory in nature or it could be a disease of some sort. I would think if it was trampling, that they would have broken bones or internal bleeding, if respiratory there should be some discharge at the nose or fluid in the lungs. You should do an autopsy to determine what killed them then take the steps necessary to keep it from happening again. Mine are in a community living habitat but it is huge by most folks standards, it could be that a buck decided those little ones needed to go and he killed them. I've noticed that our does keep their babies in their nursery until they are large enough to fend for themselves. It could be that you need to separate the mom and babies until she shows signs of wanting them out of her way, or if they are weaned, to move them to a nursery hutch till they have grown enough to fend for them selves in the community space.