I got her from a breeder and we have had her/he ( still not sure of the gender) for 7 weeks now but is still so small she can fit in my hand. She seems very healthy and playful but has not grown anything except for wing feathers. I have her on chick starter and vitamins which the breeder gave me but I am worried. I have seen pictures of 7 wk of chicks and they are 10x bigger than her. Help!