destructive

Hi, I've had my GCC for nearly two years. She's been molting for a few weeks and she's had pin feathers around her head/neck and has grown in a few new wing and tail feathers. That's all been ok but I'm concerned about her back. She does have a handful of noticeable new feathers starting to grow...

I am staying with my mother and step-father right now and they have a double yellow headed amazon parrot named Pepe. Does anyone have any suggestions as to how I can keep him from landing on and chewing up/pooping on my daughters high chair? Is there something I can spray on it or put on it that...