A young girl was lucky to have this spectacular tropical butterfly land on her arm the last time I went to the ENMAX Conservatory at the Calgary Zoo. She was delighted, and proudly stood there for me to take a photo.

""The Emerald Swallowtail (Papilio palinurus) is a butterfly found primarily in South East Asia and is one of the very few green butterflies around. It is also referred to as Emerald Peacock or Green-banded Peacock Swallowtail. There are several subspecies (from Burma, Borneo, Indonesis, Nias and the Philippines)."

en.wikipedia.org/wiki/Emerald_Swallowtail