I hatched three silkies. They hatched two days apart in total. The two chicks that came first are very mellow but the third check is very loud. she knows how to eat and drink and she knows to go under the heat lamp when she is cold, but for some reason she is just louder than the others. I checked for pasty butt and I don't see any problems. I did put ACV in their water to prevent that. Any suggestions as to why third baby might be crying? She is considerably smaller than the others that hatched two days prior. Any suggestions, any advice would be greatly appreciated, thanks guys!!