Animals, Birds, A Black-bellied Hummingbird, Euperusa nigriventris, feeds on the nector of a tropical flower of the Kohleria genus of the Gesneriaceae or African Violet family, and in the process, pol...

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 Coppery-headed Emerald and a Rufous-tailed Hummingbird feed together on a Lobster Claw Heliconia in Costa Rica.

Animals, Birds, A male Coppery-headed Emerald Hummingbird, Elvira cupreiceps, feeds on the nector of a neotropical blueberry flower in Costa Rica. Photographed in high key for artistic effect.

Animals, Birds, A Coppery-headed Emerald Hummingbird approaches a tropical Kohleria flower in Costa Rica. The bird is also pollinating the flowers as it moves from one to another to feed.

Animals, Birds, A Green Thorntail Hummingbird, Discosura conversii, coming in to feed on a tropical blueberry flower in Costa Rica.

Animals, Birds, A Green Thorntail Hummingbird, Discosura conversii, feeding on the nector of a tropical blueberry flower in Costa Rica. Photographed in high key lighting for artistic effect.

Animals, Birds, A male Green-crowned Brilliant Hummingbird, Heliodoxa jacula, feeds on the nectar of a tropical Rattlesnake Plant in Costa Rica.

Animals, Birds, A female Green-crowned Brilliant Hummingbird, Heliodoxa jacula, feeds on the nectar of a tropical Costus flower in Costa Rica.

Animals, Birds, A female Green-crowned Brilliant Hummingbird, Heliodoxa jacula, approaches a tropical blueberry flower to feed in Costa Rica. Photographed in high key for artistic effect.

Animals, Birds, Territorial competition between a male Magnificent Hummingbird, Eugenes fulgens, at right, and a female Green-crowned Brilliant Hummingbird, Heliodoxa jacula, perched on a yellow Costu...