Two rabbits nests- in cages our rabbits would build a small nest about a week before giving birth and then take it apart and build a second- bigger nest right before birth. Strangely in this case, the mothers have built nests and then sealed the entrance to the nest. We are assuming that the mothers did it (sealed them up). The entrances are full of dirt, sticks and grass. The nests as you can see are hair and grass. It is not uncommon to have a false pregnancy in the heat- so we are not sure if we will have babies in a few days or not. Time will tell. Did you know rabbits ovulate at the time of breeding?