Michael & Patricia Fogden / Purple-throated Mountain-gem (Lampornis calolaemus) hummingbird female feeding at and pollinating epiphytic Orchid flowers (Elleanthus sp), Monteverde Cloud Forest Reserve, Costa Rica

Tim Fitzharris / Dandelion (Taraxacum officinale) with bee covered with pollen, Pennsylvania

Konrad Wothe / White-tailed Bumblebee (Bombus lucorum) collecting pollen on flower, Germany

Konrad Wothe / Honey Bee (Apis mellifera) collecting pollen from willow flower, note full pollen baskets, Germany

Michael & Patricia Fogden / Passionvine Butterfly (Heliconius clysonimus) attempting to feed at Crucifix Orchid (Epidendrum radicans) the original mimics Lantana sp and Asclepias curassavica but provides no nectar

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding at and pollinating flowers of epiphytic Heath (Macleania insignis), Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Band-tailed Barbthroat (Threnetes ruckeri) hummingbird, male feeding and pollinating Heliconia (Heliconia pogonantha) flowers, rainforests, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding on Heath (Cavendishia complectens) flowers, cloud forest, Costa Rica

Michael & Patricia Fogden / Rufous-tailed Hummingbird (Amazilia tzacatl) feeding on Hamelia flowers, Costa Rica

Michael & Patricia Fogden / Coppery-headed Emerald (Elvira cupreiceps) hummingbird male feeding on and pollinating Shiney Maxillaria (Maxillaria fulgens) in cloud forest, Costa Rica

Michael & Patricia Fogden / Coppery-headed Emerald (Elvira cupreiceps) hummingbird male feeding on and pollinating Shiney Maxillaria (Maxillaria fulgens) in cloud forest, Costa Rica

Tom Vezo / Broad-billed Hummingbird (Cynanthus latirostris) male at yellow cactus flower, Arizona