The dam will only visit the nest to nurse at dawn and dusk. She will not nest with her babies at night. Even though you may never see mom at the nest, plump, warm, uninjured baby bunnies are usually just fine. Put them back and cover them with the dry grass (and mother's fur) already there. Keep pets, children, and lawn equipment away. Bunnies are independent in about 4 weeks, so please be patient. This video shows a normal, thriving nest of bunnies (that you should leave undisturbed!) Don't worry if you've touched them. It's a myth that mama won't accept them afterward.