I'm new to this chicken thing but we have had our chicks for about 5-6 weeks. We got them at the hardware store and they called them straight runs? Anyways I have no idea how old they really are but they were still fuzzy when we got them and they are now fully feathered. There is one in particular that we thought was a roo because he is much bigger than the others and has a comb and wattles and a little more aggressive. I've noticed the last couple days tho that his bottom is very swollen and contracting. He lays around a lot and seems like he is panting? We caught him today and on the bottom of the swollen area it's getting bald and pretty red. Could our he be a she getting ready to lay or egg bound or is something else going on??? Help please!