The sapphire-bellied hummingbird is an omnivore, feeding mainly on insects caught among the mangroves. It also feeds on nectar from the flowers of the tea mangrove (Pelliciera rhizophorae), which it accesses with its bill by licking the flower with its forked tongue (7). This species is predated by larger birds including orioles (family Oriolidae) and also by large insects such as the praying mantis (4).
The male sapphire-bellied hummingbird is polygamous, mating with several different females. Interactions between the male and female hummingbird are normally restricted to short courtship or displays (4), with the male advertising himself to the female with vocalisations and displays of his iridescent plumage. The female sapphire-bellied hummingbird builds the nest in a tree (6), and usually lays two eggs in a clutch (8). This species lives for an average of eight years (8).
Hummingbirds have incredible adaptations for flight, using their pectoral muscles on the upstroke of a wing beat as well as on the downstroke, enabling them to beat their wings up to 200 times per second and further allowing them to hover (9). This is one of the most energetically expensive forms of animal locomotion, but it permits a hummingbird to feed from the nectaries of flowers without perching (10).