yields fragments of four (4) mouse skulls and a variety of long bones. Owls regurgitate undigested teeth, bones, fur and feathers in a single compact nugget, usually found on the ground beneath their favorite roosts.
Larger mouse bones found in a single owl pellet, with an undissected Great Horned Owl pellet on right. Plus two toothpicks for scale comparison.
I watched Chappie, my juvenile Great Horned Owl friend, spit up two of these bone-filled nuggets several days ago. He appears to be quite well fed.