A gentle reminder: Hawaiian papaya is mostly GMO. You want to purchase papaya from Mexico or Brazil to ensure you are not feeding GMO papaya to your birds. Also, you will probably not find organic papaya in the stores. If you want that you will need to grow it in your own backyard.
The seeds in papaya are perfectly fine to feed to your birds as long as you are not feeding feather destroyers.
Do not feed the skin.
Feed papaya when it is at the peek of ripeness, not under-ripe or overly ripe, or mushy. Green papaya may contain more digestive enzymes (this is what makes it a great pre-biotic), but it also contains more salicylates (blood thinning agent when fed green) and will trigger feather destroyers. Overly ripe papayas contain more histamines which will also trigger feather destroyers. -Yeah, birds in the wild use their “parrotuition” to know exactly when to eat foods – at their peek of ripeness!
Papaya is not too sweet. In fact it is one of the tropical fruits with the least amount of fructose in it. Only 0.3 grams compared to 7.0 in a grape, 6.0 in an apple and 4.0 in a peach per 100 grams. Papaya, an indigenous tropical fruit for exotic birds actually contains the kind of sugars, known as “essential” monosaccharides our birds require to thrive, are very low in fructose overall. Whereas domestic fruits are on the average high in fructose.