1.   A large owl, the barred measures close to the length of a great horned but is much lighter and takes smaller prey.

2.   Great horned owls -- large owls with ear tufts -- nest in the Boston Common and feast on squirrels.

3.   Owls also eat birds, and large owls prey on smaller owls.

4.   The next morning at the white pine, I pointed out the large owl pellet to another birder.