Today's photo is a composite of a pair of ruby throated humingbirds hovering around honey clover (Melilotus albus*). These tiny birds return to Maine in May and stay throughout the summer, leaving before the first frost in the fall. The male hummingbird has an iridescent gorget that turns ruby red in the sunlight. It is absent in females. Juveniles look similar to the female, but may have one or two dark (or red) feathers under the chin. The hummingbird in this photo is probably a juvenile hummingbird and not a female, based on the dark spot under the chin. Hummingbirds are active throughout the day, but are most active in early morning and late evening.