If the rabbits eyes are open, ears are up, and it is larger than a tennis ball, they do NOT need rescuing. Mother rabbits only visit the nest at dusk and dawn to feed their young. The “string test” can be done by placing thin string in an “X” formation over the top of the nest. Check the nest the next morning and if the string has been disturbed then mom has been coming back to feed the babies. If you mowed over a nest and the rabbits are not injured, simply place them back in the nest and use the “string test” to make sure the mother is coming back to feed them. If the rabbit has obvious injuries, please contact the wildlife rehabilitator closest to you. If your cat brought home a rabbit in its mouth, please contact the wildlife rehabilitator closest to you.
I found a rabbits nest flowchart