I have 3 Frizzle Cochin Bantam chicks that are 9 weeks old now and one of them has always been smaller but she is just not growing... I always just thought she was a runt but is just so tiny... She is now about half the size of the other 2 and I'm starting to really worry. Also I noticed she has a large bulge on her chest and it feels like there is fluid in it. It is squishy... I am thinking maybe she has an impacted crop, but have no clue what to do to help her. Any ideas why she isn't growing like the others? What can I do to help with the bulge on her chest? Here is a pic, they are all the same age but you can see in the pic that the other 2 are at least twice her size.