My 10 new standard sized chicks shipped on 4/8 and now it's the 17th of April. Nine of the chicks (all hens) are growing like normal - wings getting longer, legs and necks taller, etc. But one little baby is not growing. She still looks like she's 2 days old! I've had to clean her vent almost every day because she gets plugged. Any idea what's happening? She's peppy and eating and drinking - just not growing.