Newborn baby rabbits need to stay in a 100 °F (38 °C) environment for the first 2 weeks of their life. [2] Journal archive from the U.S. National Institutes of Health So, to keep them nice and toasty, put their nest on top of a temperature-controlled heating pad or under a heat lamp.

Baby rabbits are born without fur and both eyes closed. It takes at least 10 days for them to open it. And around a week to develop their coat. Healthy baby rabbits look pinkish and plump. While the opposite has bluish, wrinkled skin. This may indicate that they’re starving or abandoned.