One of my hens decided she didn't want to walk on the snow to get to where the other hens were, so she started flapping these long, feathery things that are attached to the sides of her body. And she was almost airborne for a few seconds! She took it in three big leaps, whilst flapping madly, and barely touched the snow at all. To this day, it amazes me when people say chickens can fly. Today is the closest I've come to seeing evidence of it.