The Wingy Norns weren't meant as a special breed. It was, instead, a project to give people the opportunity to create new breeds with wings. As any big changes on sprite files in a breed need new body data, Alien designed the wings, attached them to the upper arm, and made new body data for the upper arm sprites in order for everyone to participate and copy the idea of having a breed with wings. The new upper arm sprites and body data for Chichi Wingies, Bengal Wingies and Civet Wingies are available at Alien's Creatures World