Quote:Yep, it wouldn't work on birds. Birds lack receptors for capsaicin, so they don't perceive it as heat like mammals do. This is actually the reason it's in hot peppers: pepper seeds would not survive the longer mammalian digestion, so they are deterred from eating peppers. Meanwhile, they taste good to birds, and the seeds do just fine in the shorter avian digestion. Whether you believe it's by intelligent design or botanical evolution, it's not a coincidence.