Natural object: Owl pellet

An owl pellet from the Brooklyn Botanic Garden, “collected” on Tuesday. Owls are gobblers, scarfing down their food whole. The undigestible bits of bone and fur and feather are coughed up in pellets. You may have dissected some in school (I missed out), because you can pretty much put together what the owl ate by examining the bones.
This one I found back in November in Chincoteague, VA.
And this one comes from last winter, in the New York Botanical Garden, up in the Bronx. I saw a Great Horned owl and Saw-whet owl (life bird) that day. The jaw bone of a small mammal is very much visible here.