[Wyrd bið ful aræd]

I not completely sure how to respond to this...You do realize that birds and humans have rather different physiological makeups, right? Ivy berries for example, toxic to humans but not to birds because birds do not have the receptor on their white blood cells that responds to the urishiol in poison ivy, unlike humans.

Thats also why you don't feed chocolate to dogs.

[editor-surveyor]

My body no longer responds to poison ivy/oak in any discernable way, after over four decades of stomping through it. Its been more than 20 years since it has affected me even minimally.