My baby roo was obviously constipated on several occasions. He would strain, then eventually go a bit, then even peck around at his vent to try to get some relief. I started giving yogurt every day or two and haven't seen the problem lately. I don't know if that actually helped or not. His poo seemed drier than the others, and I also wondered if he just might not be drinking enough for some reason. He is taller than the pullets so I also changed the waterer I was using and put it up on a block of wood so it would be easier to drink from. Good luck.