make some perry, like cider but with pears, never heard of pears that small, has the tree bark been damaged? dont know how it would turn out with pears that unripe, proberbly need to add more sugar.
let me know if you want the recipe.
think you'll be o.k. as far as poison goes, would think you might get a pain in your tum if you ate lots of raw ones, but because they ars bitter not poisoned.

__________________
Yo an' Bob
Walk lightly on the earth
take only what you need
give all you can
and your produce will be bountifull