Ugh persimmons. We have a persimmon tree in the backyard. I hate that thing. I don't personally care for the fruit. It's a ginormous haven for all types of nocturnal vermin and wild birds (when the fruit ripens), which bring the dog out barking spastically all night waking all within earshot. Then we have a giant mess when the finches drop little pieces of fruit and juice all over the place. You know how birds eat. Then the mess when it drops overripe fruit and leaves. This year I was on top of the problem though (quite literally with a ladder and tools). I trimmed it and harvested several hundred fruit (to give away), and came in hours later covered in dirt.
So at least I see the wild birds eat it, and I assume that they, like any wild animal knows what to eat and what not to. They're back everyday for more, unless like this year I didn't give them a chance to come.