Michael & Patricia Fogden / White-necked Jacobin (Florisuga mellivora) hummingbird male feeding on nectar of Fairy Duster (Calliandra sp) flower in cloud forest, Tandayapa Valley, western slope of Andes, Ecuador

Tim Fitzharris / Rufous-tailed Hummingbird (Amazilia tzacatl) at Fairy Duster (Calliandra sp) flower, Costa Rica