When we brought them in, one had gotten quite cold.. She's there on the right in this picture, resting and warming up.. However, she has made a seemingly full recovery. After lying down and warming up, she would move her mouth. She then started tweeting a bunch to her sister, and would drink water if helped. Finally, she started standing up and then moving around! We put a better feeder in, as shown in the third picture, rather than some food scattered on the yellow lid. Both chicks marveled at it, and would eat and then walk 90 degrees around to find that there was another spot for them to feed. Both are happily running around now.