The most important question you can ask when determining where to purchase your new bird is that of socialization. There are many small-scale breeders who devote most of their time to the babies. There also are good breeders who have large numbers of birds but due to time constraints, they often have helpers to come in and interact with the babies daily. As long as the babies are handled in a loving way, played with daily, taught to eat a variety of foods and to enjoy ropes, swings, and various toys, the bird will grow up confident, trusting, and loving. This reinforces early training and is a great aid in keeping the bird willing to comply with your requests.
Some parrots are sensitive and even allergic to various foods and food additives.
The obvious ones to watch for are food colorings and preservatives. The most highly allergenic food for parrots is peanuts and peanuts are in most prepared foods. If your bird appears to suffer health symptoms after eating peanuts, you will need to concentrate on a diet of nutritious fresh foods instead of dried foods like pellets and treat foods containing peanuts. If a bird is acting out aggressively due to a food that is being fed regularly to which is allergic, you will think that you have a new bird when you remove the offending food. This nightly ritual helps in the bonding process and can prove to be a useful habit if the bird ever needs to be medicated.