We got 15 baby chicks recently...they are about 2 weeks old now. This morning I noticed one of them had a small lump on the right side of her neck. Over the day, it's gotten bigger...it's not hard, but it's not squishy either. They are on cedar chips for bedding and eat starter chick food. She's acting ok - laying down a little more than normal, but is drinking and eating. Anyone have any ideas as to what could be wrong?