If you buy from a Pet Shop then "there maybe problems" when it comes to any Parrot.
Tanks was a very young bird, He was allowed to fly freely within the home, he had no cage, just a play top with a hut hung onto the perch.
Tanks would not allow anyone to touch him, he favored the Family dog, well the dog was run over while allowed to run freely, after the loss of the Dog Tanks favored a little 3 year old girl, only this little 3 year old girl was allowed to touch Tanks.
When we saw Tanks being advertized for sale we went to see him, He would fly all over the house, finally the Parent asked her little daughter to pick Tanks up so my wife and I could hold him, well Tanks bit my wife in the face and also bit me on the hand, both drew blood, my wife said "we'll take him".
Free flight is (power) in my many many years in the exotic world, many exotic owners report (this power) when allowing there birds freeflight.
It is well know that BIRD MILLS and let me define BIRD MILLS these are facilities that mass produce many different species of exotic parrots to supply pet shops.
They do not wien properly, they do not hand tame properly, they are in the exotic buisness for the mighty DOLLAR and what happens, humane societies fill, Rescue Facilities Fill with unwanted birds.
Tanks was wild, his humans allowed Tanks to be wild, and what happened, the humans failed to control there Quaker and soon enough Tanks was discarded, out the door he went, no longer wanted....
Soooooo heres my advice, find a local PRIVATE BREEDER, these Breeder's care about there birds FIRST, they love there birds FIRST, they screen there buyers back ground before allowing any of there birds to go out the door, and with all cases there are also Private breeders that (taint) the breeding world so check into the Breeder before buying from them, but avoid the pet shops..
Tanks wings were clipped, Tanks was provided the best cage money can buy, then the hardest part, Tanks was tamed and today Tanks is a well manored little Quaker, he and the wife go to Expos, Fairs, where Tanks shows off just how well manored he is.
The Quaker Parakeet is a very charming little Parrot, if you trully want to bring one of these little GEMS into your world I can set you up with a very REPUTABLE BREEDER, this breeder spends valued time with all his baby's and you will get a very Tamed little Quaker Parakeet, But remember, keeping any Parrot as a pet requires Commitment, Kind caring Commitment.
LIFE LONG COMMITMENT.
Our birds (all our birds) are allowed out of cage time each and everyday, there flights are clipped to allow flight but never POWER....
Here's Tanks today, A very kind gentle loving little Quaker Parakeet.
THE MINNESOTA COMPANION BIRDS ASOCIATION PET EXPO

THE MINNESOTA STATE FAIR

All Exotic Parrots are Powerful birds, but only as powerful as there owners allow them to be.
I want to make this clear, even within the PETSHOP world there are differences, PetCo/Petsmart/etc type petshops do not care about there birds, just the SELL.
MOM & POP petshops spend time with there birds (most do anyway) and it shines within the birds they sell....
BE BIRD SMART when thinking about adding a member to your family, your already on the right track, your a member of ParrotChatter....read, ask questions, ask for advice from those that have tried all there is to try.
Please follow this rule of thumb.
All Exotic Parrots are Powerful birds, but only as powerful as there owners allow them to be.
Good Luck and if you want me to help you find the perfect Quaker, just let me know.