I just bought a tiny little Plymouth Rock today, brought her home and put her in an aquarium with her lamp, food, and water. All she has done since I brought her home is sleep. Is this normal? How much do tiny babies sleep? I showed her the water and food and she took a sip, but hasn't eaten. She wakes a bit when I pick her up but then settles back to sleep in my hand. She was walking around in the brooder at the feed store. I'm worried she may be sick. How long between feedings is ok?