We are new parents to baby chicks. This is our very first time doing this and are very excited! We wanted to raise chickens for the fresh eggs. We have 10 chicks now and have had them for a couple weeks. I have a concern. A couple of the chicks may look like they are trying to poop, but nothing is happening. Their vents are cleared. Their rearends are heaving back and forth.. looking like trying to poop. Is there anything i should be doing about that? Thanks!