Animals, Birds, A male Black-bellied Hummingbird, Euperusa nigriventris, pollinates a tropical blueberry flower while a Green Thorntail Hummingbird, Discosura conversii, waits its turn. Costa Rica.

Animals, Birds, A Black-bellied Hummingbird, Euperusa nigriventris, approaches a tropical blueberry flower to feed, and in the process, pollinates the flowers as it flies from one to the next. Costa R...

Animals, Birds, A Black-bellied Hummingbird, Euperusa nigriventris, feeds on the nector of a tropical blueberry flower, and in the process, pollinates the flowers as it flies from one to the next. Cos...

Animals, Birds, A male Blue-chested Hummingbird, Amazilia amabilis, perched on a branch in the Rainforest Discovery Center in Panama.

Animals, Birds, A male Blue-chested Hummingbird, Amazilia amabilis, perched on a branch in the Rainforest Discovery Center in Panama.

Animals, Birds, A male Black-bellied Hummingbird, Euperusa nigriventris, and Hairy Heliconia flower, Heliconia vellerigera, in Costa Rica. Photographed in high key for artistic effect.

Animals, Birds, Black-bellied Hummingbird, Euperusa nigriventris, and a Coppery-headed Emerald Hummingbird, - Elvira cupreiceps compete for feeding space on a Costus flower in Costa Rica.

Animals, Birds, A Black-bellied Hummingbird and a Coppery-headed Emerald Hummingbird face off in competition for a feeding site on a Costus flower in Costa Rica.

Animals, Birds, A female Green-crowned Brilliant Hummingbird, Heliodoxa jacula, perches on a branch in the rain forest in Costa Rica.

Animals, Birds, A female Purple-throated Mountain-gem Hummingbird, Lamporis calolaemus, feeds on the nectar of a Lobster Claw Heliconia flower in Costa Rica.

Animals, Birds, A female Purple-throated Mountain-gem Hummingbird, Lamporis calolaemus, feeds on the nectar of a tropical Hot Lips Flower in Costa Rica.

Animals, Birds, A female Purple-throated Mountain-gem Hummingbird, Lamporis calolaemus, feeds on the nectar of a torpical Rubiaceae flower in Costa Rica.