Ive soaked her for half an hour in warm water with a little tea tree oil added (as I didn’t have any other antiseptic), cleaned off the poo and I cut off some of the feathers around the vent but didn’t want to push the protruding part back in till I actually knew what it was. The black part is hard, not soft. She eats, runs, jumps and looks and acts happy and healthy as. Only signs of illness are alternate watery poos then more formed poos then watery again - and the big thing coming out of the top side of her vent. I’ve now stopped feeding her and have removed her from the rest of the flock. She’s in quarantine haha! Can anyone tell me exactly what this is?