You take them to the SPCA. Last year my dog found some baby bunnies and was ripping them open and stuff. So we put them in a box and took all but the one not to badly hurt to the SPCA and they tried to save them and they all died. They said to leave the other one out over night and hope the mother will come back. They said to see if its belly is full in the morning and if its not the mother is never coming back and we need to take it to the SPCA. The next day we realized the mother is never coming back and we took it to the SPCA and they saved it. They said they would release it with other bunnies and then it would be adopted with those ones.