When you start feeding them birds thier crap stinks more from what I have read. Plus, a finch is a mighty expensive meal, I worked in a pet shop and those things were not cheap little birds. I would think you would have to feed several of those to make any kind of impact in feeding, and I wonder if getting a bp to eat something like that might actually be hard since it would be a prey item it probably has not ever seen before, therefor, it would not see it as such possibly. And Adam is right, they are nasty little boogers to get bit by.