UNSAFE SEEDS:

The seeds of apples and the pits of cherries, peaches, plums, pears, apricots and nectarines are all unsafe to give to your birds.  They contain varying levels of a cyanide compound that can cause death. In humans, it would take many, many apple seeds to cause us to feel the effects of the poison, but, of course, parrots would succumb much more quickly to a smaller amount. If your bird gets a hold of a couple of apple seeds, it really isn’t a big deal, and you don’t need to rush him to the vet.
Keep in mind that the larger the seed or pit, the higher the amount of toxins they contain. Chewing them releases amounts of poison that might otherwise remain locked inside the hull and pass through the system without causing much harm.  Unfortunately, birds chew everything, and if given the opportunity to chew open a pit, they will.

 

SAFE SEEDS:

The seeds contained in grapes, cantaloupe, cranberries, watermelon, honeydew melon and pomegranates are all safe for birds to eat as well as the seeds of citrus fruits such as oranges, grapefruits and lemons.  While they are not fruits, the seeds from squashes, pumpkins, chilli’s and peppers are also safe.  Sometimes giving these seedy portions of fruits and vegetables will entice a bird to eat the flesh around them.

The pomegranate is a most interesting fruit. The only thing edible about it is the seed portion.  The seeds are surrounded by a foam-like textured flesh covered in a tough rind.  This is a great foraging toy for a bird