I have 18 chickes. They are 3 weeks old. 16 are arucana and 2 are silkies. They all seem to get along fine. One of the silkies is so very small. She's half the size of the other silkie. I've watched her eating habits. She occasionally goes to the feeder, nobody pushes her away. Mostly she scratches and pecks on the ground. She eats a lot of grit. I try to put food on the ground where she spends time. What else can I do for her? She is so much smaller than everybody else.