Hiya Grace.
I am sure you will LOVE being enslaved by a little green chicken.
You can keep your Q and your tiel in the same room (after quarantine). You may get lucky and they will even play together a little. You will have to referee tween them as you introduce them ... see how it goes. But you may have to ensure that they have totally separate play areas. All my birds (I have 8) are out of their cages when I am home and they pretty much leave each other alone. The tiels hang together, the budgies hang together, my sun and Quaker are best buds, and my IRN just kinda oversees them all!

You will want to cage the tiel and Q separately. Most ppl will tell you that they can't live together. I have a tiel that lives with one of my budgies, and one tiel lives with my Q, but they don't really interact, it is just more or less a place to perch their butts at nite

Minimum cage size for a Quaker is usually 18 x 18, but the bigger you can afford the better!! Bar spacing usually no bigger than 5/8 inch apart, you don't want them able to get their ornery little heads thru the bars and get stuck and hurt themselves

Some Quakers like a happy hut (sleepy hut) for nite time or security, some don't do well. Strictly a bird preference I think. My Isis (Quaker) doesn't have a hut of his own, but occasionally when he spends the nite with Precious (sun) he will sleep in the hut with him ... it's funny seeing tails coming out both ends of the hut

You will want to make sure you get your quaker on a pelleted diet with plenty of fruits and vegetables as well. There is a thread pinned at the top of the Diet section that gives a listing of the good and bad foods for Quakers. You can get a lot of FREE samples from these companies .... just give them a call ...
Hagen (Tropican pellets and Gourmet mix)
-- 1-800-225-2700
Harrisons (pellets)
-- 1-800-346-0269
Lafeber (Nutriberries and AviCakes)
-- 1-800-842-6445
Pretty Bird International Inc. (pellets)
-- 1-800-356-5020
Roudybush Feed (pellets)
-- 1-800-326-1726
Ziegler Brothers Inc. (pellets)
-- 1-800-841-6800
That way, you can find a pellet your fid (feathered kid) likes. Some like fruit flavored, some don't, some like colors, some don't ... again, bird preference.
Whatever time you are going to devote to your green feathered friend, think about whether you will be able to devote that much time to him for the NEXT 30 YEARS!! In other words, dont' spend more time with him than you will be able to do for a long long time in the future. If you spend the next 8 weeks with your fid on you 24/7, he will expect it forever and will let you KNOW it if you suddenly try to NOT spend ALL your time with him (as in work, school, life, other people, other pets, children, etc.) You will not want a screamer or a plucker to suddenly appear in place of your loving baby

My fids are out of their cages when I am home, and I spend some one-on-one time with each of them, whether it's just talking to them, holding/cuddling them for a little while, playing with them, or letting them climb on me when i'm watching tv or online, but they also have toys to play with on top of the cages, in the cages, on the playstand, and they have each other when they are out. When they are in their cages during the day or if I am in and out of the house, they are fairly content to chatter back and forth and play with their toys. They chatter all the time, but I am lucky I don't have a screamer.
I hope this information has helped you without becoming a novel!

There is so much to learn about the quaker parrot, but one thing you will learn VERY quickly is how much love is packed in that little green ball of feathers! They capture your heart so quick!!
Any questions you have, don't hesitate to ask. We are very happy to share our knowledge and experience with the quaker parrot. Nothing is too dumb or stupid to ask, even if it's been asked a hundred time before ... if YOU don't know, how can you learn if you don't ask?
Welcome to the forum. We look forward to stories about your new slave master when you get him. Oh, and by the way ... WE LOVE PICTURES!!!

Isis (Q) and Precious (sun) - best buds