Royal sunangel  (Heliangelus regalis)

The royal sunangel is a small-bodied hummingbird, with an elongated, deeply-forked tail, and a straight black bill. Like all other members of the order Apodiformes, which includes hummingbirds and swifts, it possesses a unique wing structure which they beat in a figure-of-eight pattern, making them capable of intricate aerial manoeuvres (4). The male's plumage is a deep, shimmering violet-blue, with a brighter iridescence on the forecrown. The female is dark green, with rich cinnamon underparts spotted with bronzy-green, and a broad, pale breast band. The iridescent, metallic blue tail is not as deeply forked as that of the male. Immature royal sunangels are similar in appearance to the female, except the throat is spotted grey rather than green, and the amount of blue in the plumage increases steadily with age (2) (5).