Not really a diary, but many just start a thread and keep adding to it! Since the posts are dated, you can look back any time and read your older threads from the beginning, so it serves the same purpose.
Timber loves his boing, but not when I replace it (he shreds on it and it has to be replaced periodically so he doesn't get his talons tangled in the threads). Even if I buy the exact color etc., he looks at it like it is the devil for almost a week. Charlie will warm up to it, you are doing it right just letting him get used to it until he is ready!
Timber is a "floor bird" also. He loves to strut around the house, hide behind things and forage for tidbits I might have missed cleaning. He likes to get under his cage and "hide." Sometimes he will take a beloved blue plastic straw under there and I hear his talons scrabbling around under there (tile floor) as he plays with the straw. He also loves to chase shoes. He will bite the shoe then jump on top of it and flap his wings in a show of dominance. They are such funny creatures!
That's great! Timber just likes to be where I am. He rides my forearm (he's afraid of hands) through the house and when I sit, he sits with me. Any playing we do isn't when he's on my arm. That's cuddle time for Timber. When I sit, he'll tuck his head into my chest or stomach and that's my cue to give him a good head scratching.
So glad to hear this! I just knew he'd pull out of it regardless of the cause (which could well have been a combination of the accident and the environmental differences).
You will definitely have your hands full! Congratulations on having a hatchling. The orbits are pretty popular with most greys I know, as are the boing rope perches. You need to make sure you cut the dangling threads off (greys like to chew on the rope) to prevent them getting a nail caught and injuring themselves.
I have no idea as to the health concerns. Someone with more experience will come along. However, I'd definitely have an avian vet check him over, if for no other reason than to establish a baseline. Bless you for taking him in and rescuing him from Walmart seed!