Vent Clip

My cocktail is bleeding from the fireplace (below) How do I prevent this?
My cockatoo is only 19 weeks old. He / she flies back and seems to always land on its tail feathers. A week ago I had to take to the vet, as she began to bleed at the base of the tail. We believe that what happened when it landed (which have not clipped the wings – of the animal). It was fine for 3 days but now has begun to bleed again after flying backwards and landed hard on the ground. What should I do to stop the bleeding in the future and how can I prevent fly backwards?
Hi Linda, your bird can fly back? That's incredible. Is this something we were trained to do? If so, your amazing too! If Please write and let me know, I'm dying to know! You can not help with the bleeding, sorry.
Bonnie Vent channeled clip 090428