Violet-crowned hummingbird (Amazilia violiceps) in flight, Patagonia, Arizona, United States of America, North America

Rufous-tailed hummingbird (Amazilia tzacatl) on branch, Sarapiqui, Costa Rica, Central America

Rufous-tailed hummingbird (Amazilia tzacatl) on branch, Sarapiqui, Costa Rica, Central America

Rufous-tailed hummingbird (Amazilia tzacatl) opening wings, Costa Rica, Central America

Green-Crowned Woodnymph (Thalurania fannyi), Booted Racket-tail (Ocreatus underwoodii), Andean Emerald (Amazilia franciae), adults feeding on ginger flower, Mindo, Ecuador, Andes, South America

Booted Racket-tail (Ocreatus underwoodii) and Andean Emerald (Amazilia franciae), two males feeding on flower during rain in cloud forest rainforest, Mindo, Ecuador, Andes, South America

Buff-bellied Hummingbird (Amazilia yucatanensis), adult feeding on Indian Paintbrush (Castilleja coccinea), Corpus Christi, Coastal Bend, Texas, USA

Andean Emerald (Amazilia franciae), adult in flight feeding from flower in cloud forest rainforest, Mindo, Ecuador, Andes, South America

Buff-bellied Hummingbird, (Amazilia yucatanenensis), adult, Weslaco, Rio Grande Valley, South Texas, USA

Rufous-tailed hummingbird (Amazilia tzacatl) on scarlet lobster-claw (Heliconia bihai), Sarapiqui area, Costa Rica, Central America

Researcher catching Rufous-tailed Hummingbird (Amazilia Tzacatl) in a net set up for pollination study, rainforest at "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

Researchers picking up pollen with a brush from the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui , Costa Rica

Rufous-tailed Hummingbird (Amazilia tzacatl) in a net set up by a researcher as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

Researcher measuring the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

Researchers picking up pollen using tape on the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica