One of my rose comb girls is a runt. They are all 15 days old now, have wing feathers and tail feathers and feathers filling in on their necks, and have about tripled in size maybe? All but this little girl, who is now named chicken little. Lol She eats, and drinks and sleeps alot. Not near as aggressive about treats, not social at all with me, but is very calm and quiet when I pick her up. She has small wing tips coming in and has barely grown at all. She looks identical to her sister, but even though they are the same age, same hatch, she is a good week to ten days behind all the others on growth and development. What should I do? I'm raising the heat lamp, to wean them from it, I'm afraid she'll be cold. And now that it is so noticeable in the last two days that she is smaller and all I'm afraid she'll get picked on... no one has yet tho. anyone with experience on this?