Sandpaper perch covers. Sounds like a good idea to keep their claws from getting too long. It's not. In fact, it damages the pads on the bottom of their feet. I know every pet store carries them, but they are no good. And not just Scrub Jays but most all birds. They sell a soft fabric perch cover that sticks on and comes in a roll like tape. You can find this at a good vet or avian clinic. Possibly at your local pet store.
Learn to trim their nails or have an avian vet do it. I really prefer to do it myself. Make sure you learn how first. There are a ton of how to videos up on that. It can be dangerous to have their claws too long. For both of you.
Later I will do a post on beak and nail over growth as it is something that everyone will deal with who has a Scrub Jay for a long time. It can be remedied very easily.
Another reminder. The more variety in their diet the better. Mix it up. Hand feeding is great, but let them crack and eat their own nuts. Its good for their beak and they will not become reliant on you to do it for them.
Yellow Veggies are good for their eyes and that's the one area they are prone to have the most problems as they get older. Carrots, Yellow Squash. Organic plain baby food works for this. Just vegetable and water. And the birds love it. You may find your seven year old Scrub Jay still flapping it's wings making baby sounds when you feed them this. Blue still does.
Because these birds are so social. You will find when they are young they do well around most other people. But they may be frightened by odd things. More so as they age. A certain color, a certain sound. Someday you will come home and your bird will look at you and scream. For me it was a hat... and a certain jacket or two. If I wear them. He gets scared. So, I don't wear them near him. If someone is doing yard work outside I stay home. A scared bird in a cage is no good. They will flap around and get hurt. A really scared Scrub Jay will go open beak in panic, its time to take action to calm them down if this happens. Take them in another room. Make it dark. Talk to them. Take them away from whatever is scaring them. The lawnmower, whatever it may be. Oddly blue loves white noise. He sings to it. Try it!
If you ever want another vacation in your lifetime find someone you really trust and let them bond with your bird.
Let someone get to really know your Scrub Jay. Let them get close to it so it's very comfortable with them so they can stay and watch it for you. Although we have boarding services here. Blue at his age is so reliant on me, is so used to his known environment and our routine. I could never board him. I would not sleep at night. I have to have someone he is very comfortable with here with him in our house.
Lastly, just give them a ton of attention. They live for it. Give them plenty of toys, hiding spots for their nuts, and lots of patience and love. You won't regret it.
Check out some of the new data on the intelligence of the western Scrub Jay! New lifespan data there too. The oldest Scrub is 15 years old.