I have no picture because most blood has been cleaned but not sure if it's normal or anything but my cockatiel just pee but no poop and the pee seems yellow.
He definitely wants to come out more. Is there a way to let him out at least a couple of hours with supervision. Also if he has lost quite a bit of blood, i would take him to an avian vet. I had my cockatiel also bleed, but it was a little bit and dried out quickly. So use ur own judgement, because it dangerous if they look quite a bit of blood. Do you have a pic?