Sunni is a 4-month-old cockatiel, and his wings are clipped. Anytime he gets spooked he sort of jumps backward and flaps his wings, sliding down the nearest wall and landing on his tail feathers. He has cracked 3 in half so far and there are 2 that are snapped but not quite fallen off. Is there any way to prevent this from happening? I plan on letting him grow out his wing feathers and making him fully flighted, but is there any way I can make him stop breaking his tail feathers now? or will he be like this until he can fly?
here's a picture of his tail:

here's a picture of his tail:
