Bob Rutemoeller and Mary Sue Ittner noticed this beautiful moth feeding on a plant in their garden. It's a Hummingbird Moth, or a White-lined Sphinx Moth.

This moth has a very long tongue, with which she sips nectar from flowers. You can also see this moth's antennae, a giveaway that it is a moth, not a bird.

Thanks to Bob for allowing me to share his photos with you here.