There are 2 ways that have worked for me. Submerge baby rabbit (except head) in warm water about 90 degrees and let water warm baby up. Then dry thoroughly and keep warm. OR put cold babies on a heating pad, warm not hot, and wrap up so no drafts can hit them. Wrapping in a flannel cloth so they are not directly on heating pad is desirable.
warm
A Warm Baby with a Cold Deck - 1899 was released on: USA: November 1899
If you are referring to a human baby then no, the baby is warm blooded.
warm or slightly chilly milk if it is to cold they will get friskie.
Warm Blooded
They are endothermic, so warm-blooded
You would normally bottle feed a baby rabbit with luke warm goats milk and make sure to keep the baby rabbit warm with a hot water bottle under a blanket.
Caca
Caca
You just bundle them up in a small blanket or maybe get them some baby clothes to wear so they will be warm.
Rabbits can handle cold weather if sheltered properly. But if a rabbit becomes to accustomed to the cold a warm environment can be too warm for it so it is good to balance it out. But if there isn't a way and if it is either cold or warm, rabbits prefer a cold environment as they have a fur coat, which contains natural oils to keep it warm!
Your rabbitt needs a rabbit box. This is a small dark box that your rabbitt will use to keep her babies warm. She will probably line it with fur.