My Timneh weighs 273 gr!!!
He is a small one too, and I had the same problem with his tail feathers! Koekie plays very rough on his back, upside down. And all his tail feather were broken.
http://www.youtube.com/watch?v=n_89m_kMAfU
But I just changed the cage settings ( do I say that right? )
When he plays really rough, I just stop him Or get his attention with another toy.Don't know if that's right, but he almost lost al his beautiful tail feathers.
And he baths in his water bowl When I see him do that I stop him and put him in the shower. Because when he baths in his waterbowl, his tail feathers get detroyed between the jail.
But this tailfeathers are all back now I am just really careful with his tailfeathers.
Your timneh looks cute Cute little face...