Is this the GHO that we have been hearing late at night? This owl first showed up first as a flyby and then to our owlbox rooftop!

Ear tuffs on the GHO laying down
GHO info and a Pix
http://animals.nationalgeographic.com/animals/birds/great-horned-owl/
http://en.wikipedia.org/wiki/Great_Horned_Owl