Insect and Spider Identification: CLOSED: I think this might be a hummingbird moth???, 1 by Jnette

Jnette wrote:
This is on my front deck and I think it might be a hummingbird moth. It doesn't seem to be dead, but it doesn't move. It is on the chair out there. It is 3 to 4 inches across from the tips of the wings, the body is about 1 1/2 or 2 inches long. Seems to have a couple of "horns"?

Mostly a blue-gray with a little brown on the bottom section of the wings Thing their might be an "eye" in this section.

What is it, and what does it eat on? I have not seen any damage from anything eating my plants.