No no no! Absolutely no apple seeds. If you're talking about regular seeds, then they are fine, just make sure they're for parakeets. Parakeets are able to eat apples, but keep them away from apple seeds and the core of the apple. They're poisonous to them. I would recommend slicing the apple up so they don't get near the seeds or core of it. Make sure to wash the apple slices or pieces as well. They really love fruits and usually veggies. There are some fruits and veggies they CAN'T eat, so make sure to know which is which. Make sure to vary their diet, like with parakeet seeds and a variety of fruits and veggies. Hope this helps and good luck to you and your parakeet(s)!