The phoenix is a neutral mob that lives in the nether. It gives off light and if you attack it, it will get mad and set you on fire for 8 seconds. It can be tamed with seeds, and once tamed if it sits on your shoulder and you are at less than half health it will sometimes give you a short burst of regeneration. Besides this, it acts like a regular parrot.

NOTE: Sadly this is just a texture, not a data pack or mod. If you download this you will not get anything I described. Just in case you were confused, which you probably weren't and I'm just stupid :(