I am not a vet, so I can't really advise on whether that poo is normal, but I can tell you my chickens make all kinds of poos. Some are brown and runny...i hear those are cecal poos that contain a lot of liquid waste...some are formed...some are partially formed/partially runny...and a bird normally should produce both kinds- cecal and formed if I understand correctly. If you see blood or worms or only runny poos or something just doesn't seem right, I would take a stool sample and/or bird to the vet if that is an option. There are poo charts out there to show what is normal and what is not. Sorry I couldn't give a definitive answer.