Hi,

Rabbit mothers nurse their babies for approximately 5 minutes a day. They will be in the nest or nest box early in the morning and then again in the evening. The milk is very rich and the babies "fill up" to capacity within minutes. Mother rabbits do not "sit" on the babies to keep them warm as do some mammals and birds. They build a nest with fur and grasses which helps to keep the babies warm in between feedings.

Very young wild baby bunnies with eyes closed and ears back rarely survive in captivity, even given the most expert human care; and so it is very important to determine whether they really need help. Try to assess whether the infants seem warm and healthy or cold, thin, and dehydrated. One test for dehydration is to gently pinch the loose skin at the back of the neck. If it stays in a "tent," or does not spring back in one second, the bunny is SEVERELY dehydrated and needs rehabilitation IMMEDIATELY by a professional rabbit vet or rehabber. Another test is to stroke the genital area to stimulate elimination. If the pee is brown and gritty, the mother rabbit has not been there to help the bunnies urinate. The brown, gritty urine is toxic, and the infant bunny must be cared for by a professional. Please contact a Wildlife Rehabilitator or rabbit vet immediately.

I am including a link on how to care for the rabbits if necessary.