They do like persimmons...I gathered a couple of bags of them last year where we get wood and dumped them out. It took them a bit but they ate every last one. You should have seen them waiting like vultures for the deer to drop a peach for them under the peach trees this year!
I'd look out the window and see a deer up there tugging peaches and a whole ring of chickens around her, just waiting.....
They are also doing the same thing with the apples...the crows knock down apples and the chickens are waiting at the bottom of the trees, ready to fight for the fruit. Poor crows.
I wouldn't do maggots in that manner either....I heard a well known author(Harvey Ussery(sp?) killed his whole flock by trying to do the whole soldier fly maggot thing..gave them all botulism.