The Anna’s Hummingbird is a medium-sized hummingbird with a relatively short, straight bill and a long sloping forehead. Both males and females are bronze-green above, and gray below. Males are easy to distinguish from other hummingbirds as their entire heads and throats are bright iridescent red. Female have green heads, with a small amount of red on their throats. Females have black tails with white tips, while the males’ tails are solid blackish-gray.