Penguins are extremely artful fabricating intricate doll houses. This was laughed at in the scientific circles, often until men (and women) of so called learning blacked out from being unable to catch their breath. Seriously.
Then Tildey Lamphort demonstrated that what was thought to be wings were actually mittens! They covered their small, delicate hands, protecting them from the cold. The the wanna-be geniuses hung their heads in shame and mumbled, "Sorry. You were right." Two weeks later, Tildey Lamphort disappeared and the world found that penguins mittens had been glued to their hands. The scientist went back to their smug no it all stance.
So of course Penguins cannot fly, but at one time they made the finest doll houses in the entire world. 