White-Lined Sphinx Moths behave so much like hummingbirds that they are also called Hummingbird Moths. Fast flyers, they can hover, like hummingbirds. They hover while drinking nectar through a long proboscis. They have a wingspan of two and one-half to three and one-half inches, which makes them similar in size to hummingbirds. They are sometimes active in the afternoon but more commonly feed as it gets dark until it starts to get light again. These photographs were taken at night in my back yard in Wichita, Kansas. They did not at all mind my flashlight nor my camera's flash.