Today I noticed one of my two girls just kinda setting around not doing much. Very unlike her. I walked to check her out and she let me. That also is very unlike her unless she is roosting. I noticed right off her bottom was nasty and as I pet her, her poop was watery. She just set while I checked her over. Lately I haven't been getting eggs regularly from one of the two girls. And sometimes the egg has been broke in the nest. I changed their food to Purina laying crumbles. But they free range more than anything. I have two small Cuchin roosters that are always with the girls all day. They do tend to bully them and chase and the one holds them down alot to mate. Their to little to do the deed so I don't have to worry about any fertile eggs. I'm just wondering why my baby girl is all the sudden not feeling well. And dose it have anything to do with the boys or the eggs always being broken. I have lost two frm an upper respiratory infection and once you notice it you have to act fast or its to late. I'm hoping this isn't it. Any ideas. I'm actually new to chickens. Please help.