Please read the comprehensive article on this subject. I spent many hours researching this topic in hopes that parrot owners would feel confident about giving their birds this natural part of their diet. Here is the URL or you can simply click on the hot link in the box below. Magnolia blossoms are not listed among the edible nor the non-edible flowers on any of the many lists that I found while researching the article below. Unless you are SURE that it is edible, do NOT feed it.
Flowers are a wonderful addition to the diet of our parrots.
It is a natural food for them in the wild. They eat many parts of the flower from the new bud to the pollen, petals, and stem. My birds particularly like Hibiscus blossoms which are plentiful in south Florida. Our parrots are likely to get trace minerals and vitamins in flower blossoms that they do not get from their regular diet. The visual impact of a large colorful blossom is obvious when your bird sees it in his dish or cage.