hummingbird ?

Every year many people are taken back as they see in their garden what appears at first sight to be a hummingbird hovering at the flowers. A careful check on the size and a closer look unmasks this imposter as a hummingbird hawkmoth, Macroglossum stellatarum.
The hummingbird hawkmoth is a day-flying moth with a wingspan about two inches (50-58mm). It has a brown, white-spotted abdomen, brown forewings and orange hindwings. It is very swift on the wing and an expert hoverer. The wings beat so rapidly that they produce an audible hum and can be seen only as a haze. The darting movement from one flower to the next with the long proboscis uncoiled completes the illusion of a hummingbird