I bought some owl pellets for me & my friend, Josh Yeldman, who likes to paint owls. They are sold at Paxton Gate (a super cool shop in San Fran) if you are not lucky enough to find them in the wild. Owl pellets are the bits & pieces owls don't digest & buy siphoning through them you can unfold their eating secrets. You might find fur, bones & the like once you dissect & pull them apart. See here for a demonstration! This beautiful paper barn owl hangs in my studio & was made for me by my friend Anna-Wili.