Rolf Nussbaumer / Buff-bellied Hummingbird (Amazilia yucatanenensis) feeding on Tropical Sage (Salvia coccinea) Sinton, Corpus Christi, Coastal Bend, Texas Coast, USA

Robin Chittenden / Copper rumped hummingbird (Amazilia / Saucerottia tobaci) feeding, Trinidad, April

Eric Baccega / Amazilia hummingbird (Amazilia amazilia) flying to Agave flower to feed on it, Chaparri Ecological Reserve, Peru, South America

Konrad Wothe / Blue-tailed Hummingbird (Amazilia cyanura) feeding at flowers, Honduras

Rolf Nussbaumer / Buff bellied hummingbird {Amazilia yucatanensis} at Hibiscus flower, Texas, USA.

Michael & Patricia Fogden / Snowy-bellied Hummingbird (Amazilia edward) male flying near Firebush flowers (Hamelia patens) cloud forest, Costa Rica

Michael & Patricia Fogden / Blue-chested Hummingbird (Amazilia amabilis) feeding on nectar from flowers (Hamelia sp) rainforests of Costa Rica

Michael & Patricia Fogden / Eyelash Viper (Bothriechis schlegelii) gold morph lying in wait on Heliconia (Heliconia imbricata) to strike at Rufous-tailed Hummingbird (Amazilia tzacatl) rainforest, Costa Rica

Michael & Patricia Fogden / Blue-chested Hummingbird (Amazilia amabilis) male at flowers (Hamelia sp) lowland rainforest, Costa Rica

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

Tim Fitzharris / Rufous-tailed Hummingbird (Amazilia tzacatl) feeding on flower nectar, Costa Rica

Mike Potts / Versicoloured emerald hummingbird (Amazilia versicolour) Santa Teresa, Rio de Janeiro, Brazil.

Mike Potts / Andean emerald hummingbird (Amazilia franciae), Tandayapa, Ecuador.

Mike Wilkes / Rufous tailed hummingbird (Amazila tzacatl) perched on a branch, Mindo, Ecuador

Mike Wilkes / Rufous tailed humming bird (Amazila tzacatl) perched on branch, Mindo, Ecuador

Tom Vezo / Buff-bellied Hummingbird (Amazilia yucatanensis) feeding on flower nectar, Rio Grande Valley, Texas

Konrad Wothe / Rufous tailed Hummingbird (Amazilia tzacatl) male, Costa Rica

Konrad Wothe / Blue-chested hummingbird (Amazilia amabilis) male feeding from flower, Costa Rica, Central America

Konrad Wothe / Rufous tailed Hummingbird (Amazilia tzacatl) male profile, Costa Rica

Claudio Contreras / Cinnamon Hummingbird (Amazilia rutila graysoni). Maria Madre Island, Islas Marias Biosphere Reserve, Sea of Cortez (Gulf of California), Mexico, June.

Claudio Contreras / Cinnamon Hummingbird (Amazilia rutila graysoni). Maria Madre Island, Islas Marias Biosphere Reserve, Sea of Cortez (Gulf of California), Mexico, June.

Claudio Contreras / Cinnamon Hummingbird (Amazilia rutila graysoni) feeding at flower. Maria Madre Island, Islas Marias Biosphere Reserve, Sea of Cortez (Gulf of California), Mexico, June.

Rolf Nussbaumer / Buff-bellied hummingbird (Amazilia yucatanenensis) female feeding on Tropical Sage (Salvia coccinea) Dinero, Lake Corpus Christi, South Texas, USA.

Hiroya Minakuchi / Versicolored Emerald (Amazilia versicolor) hummingbird, Costa Rica

Steve Gettle / Andean Emerald (Amazilia franciae) hummingbird calling, Ecuador

B&S Draker / Buff-bellied Hummingbird (Amazilia yucatanenensis) male feeding on lantana. Sinton, Corpus Christi, Coastal Bend, Texas, USA, June.

Luiz Claudio Marigo / Glittering-throated Emerald Hummingbird (Amazilia fimbriata nigricauda) perched in vegetation. The Pantanal wetlands of Mato Grosso State, Brazil, November.

Murray Cooper / Andean Emerald (Amazilia franciae) hummingbird, Ecuador

Murray Cooper / Andean Emerald (Amazilia franciae) with Green Thorntail (Discosura conversii) female flying in lowland rainforest, Ecuador

Murray Cooper / Andean Emerald (Amazilia franciae) with Green Thorntail (Discosura conversii) female in lowland rainforest, Ecuador

Rolf Nussbaumer / Buff-bellied Hummingbird (Amazilia yucatanenensis) in flight, feeding on Pentas, Sinton, Corpus Christi, Coastal Bend, Texas Coast, USA

Rolf Nussbaumer / Buff-bellied Hummingbird (Amazilia yucatanenensis)in flight feeding on Zinnia, Sinton, Corpus Christi, Coastal Bend, Texas Coast, USA

Rolf Nussbaumer / Buff-bellied Hummingbird (Amazilia yucatanenensis) in flight feeding on Honeysuckle, Sinton, Corpus Christi, Coastal Bend, Texas Coast, USA

Murray Cooper / Amazilia Hummingbird (Amazilia amazilia) drinking water while hovering, Peru

Murray Cooper / Amazilia Hummingbird (Amazilia amazilia) landing at water source, Peru

Murray Cooper / Indigo-capped Hummingbird (Amazilia cyanifrons), Colombia

Murray Cooper / Indigo-capped Hummingbird (Amazilia cyanifrons), Colombia

Stephen Dalton / Amazilia hummingbird (Amazilia amazilia) in flight approaching tropical flower, South America, controlled conditions

Stephen Dalton / Amazilia hummingbird (Amazilia amazilia dumerillii) flying to Bird of paradise (Strelitzia) flower, South America, controlled conditions

Tim Fitzharris / Rufous-tailed Hummingbird (Amazilia tzacatl) hovering near flower, Ecuador

Tim Fitzharris / Rufous-tailed Hummingbird (Amazilia tzacatl) hovering near flower, Costa Rica

Tim Fitzharris / Andean Emerald (Amazilia franciae) hummingbird feeling on yellow flower, Ecuador

Tim Fitzharris / Andean Emerald (Amazilia franciae) hummingbird feeding on a yellow flower, Ecuador

Nick Garbutt / Andean emerald hummingbird (Amazilia franciae) feeding at flower. Tandayapa Valley, W. Andes, Ecuador (Digitally Modified).

Eric Baccega / Amazilia hummingbird (Amazilia amazilia) feeding on Agave blossom, Chaparri Ecological Reserve, Peru, South America

Eric Baccega / Amazilia hummingbird (Amazilia amazilia) feeding on Agave blossom, Chaparri Ecological Reserve, Peru, South America

Eric Baccega / Amazilia hummingbird (Amazilia amazilia) feeding on Agave blossom, Chaparri Ecological Reserve, Peru, South America

Michael & Patricia Fogden / Mangrove Hummingbird (Amazilia boucardi) female at River Koko (Inga vera) flower, Costa Rica

Michael & Patricia Fogden / Mangrove Hummingbird (Amazilia boucardi) female at River Koko (Inga vera) flower, Costa Rica

Michael & Patricia Fogden / Mangrove Hummingbird (Amazilia boucardi) male at Puiva Tree (Tabebuia impetiginosa) flowers, Costa Rica

Rolf Nussbaumer / Andean Emerald (Amazilia franciae) adult feeding from ginger flower during rain fall, Mindo, Ecuador, Andes, South America, January

Rolf Nussbaumer / Andean Emerald (Amazilia franciae) adult feeding from flower, Mindo, Ecuador, Andes, South America, January

Rolf Nussbaumer / Andean Emerald (Amazilia franciae) adult perched on fern covered in rain drops, Mindo, Ecuador, Andes, South America, January

Rolf Nussbaumer / Rufous-tailed Hummingbird (Amazilia tzacatl) adult feeding from flower, Mindo, Ecuador, Andes, South America, January

Rolf Nussbaumer / Rufous-tailed Hummingbird (Amazilia tzacatl), adult feeding from flower, Mindo, Ecuador, Andes, South America, January

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

Nick Garbutt / Andean Emerald (Hummingbird) (Amazilia franciae) feeding from feeder, Tandayapa Valley, W. Andes, Ecuador.

Nick Garbutt / Andean Emerald Hummingbird (Amazilia franciae) hovering, Tandayapa Valley, Andes, Ecuador.

Rolf Nussbaumer / Buff-bellied Hummingbird {Amazilia yucatanenensis} male flying to feed on Penta flowers, Texas, USA, June

Tom Vezo / Buff-bellied Hummingbird (Amazilia yucatanensis), Rio Grande Valley, Texas

Tom Vezo / Buff-bellied Hummingbird (Amazilia yucatanensis) male feeding, Rio Grande Valley, Texas

Nick Garbutt / Andean emerald hummingbird {Amazilia franciae} Tandayapa Cloud forest, Ecuador

Rolf Nussbaumer / Rufous-tailed Hummingbird {Amazilia tzacatl} feeding on Heliconia Flower, Central Valley, Costa Rica

Tom Vezo / Rufous-tailed Hummingbird (Amazilia tzacatl) feeding at flower, Costa Rica

Tom Vezo / Rufous-tailed Hummingbird (Amazilia tzacatl) feeding at flower, Costa Rica

Rolf Nussbaumer / Buff-bellied Hummingbird (Amazilia yucatanensis) feeding on Indian Paintbrush (Castilleja coccinea), Lake Corpus Christi, Texas, USA. May 2003

Rolf Nussbaumer / Buff-bellied Hummingbird (Amazilia yucatanenensis) feeding from Turk's Cap (Malvaviscus drummondii) Welder Wildlife Refuge, Sinton, Texas, USA. May 2005

Mark Jones / Rufous-tailed Hummingbird (Amazilia tzacatl) female hovering, west Andean cloud forest, Maquipucuna Reserve, Ecuador

Kim Taylor / Copper rumped hummingbird {Amazilia tobaci} approaching Vervine flower, captive, South America. [Trinidad, West Indies.

Kim Taylor / Copper-rumped Hummingbird {Amazilia tobaci} in flight approaching Vervine flower, Digital composite.

Kim Taylor / Copper rumped hummingbird {Amazilia tobaci}

Pete Oxford / Rufous tailed hummingbird {Amazilia tzacatl} Macipucuna Cloud forest Reserve, Western Andes, Ecuador.

Pete Oxford / White chested emerald hummingbird {Amazilia chionopectus} perching on branch, Asa Wright, Trinidad.

DAVID TIPLING / Rufous tailed Hummingbird {Amazilia tzacatl} in flight, feeding on flower, El Valle, Panama.

DAVID TIPLING / Rufous tailed Hummingbird {Amazilia tzacatl} flying to flower, El Valle, Panama.

DAVID TIPLING / Rufous tailed Hummingbird {Amazilia tzacatl} feeding from flowers, El Valle, Panama.

DAVID TIPLING / Rear-view of Rufous tailed Hummingbird {Amazilia tzacatl} feeding on flower, El Valle, Panama.

DAVID TIPLING / Snowy-bellied Hummingbird {Amazilia edward} El Valle, Panama.

DAVID TIPLING / Snowy-bellied Hummingbird {Amazilia edward} portrait, El Valle, Panama.

Nigel Bean / Copper-rumped hummingbird, Trinidad.

Nigel Bean / Copper-rumped hummingbird, Trinidad.

Luiz Claudio Marigo / White crested emerald hummingbird {Amazilia chionopectus} Trinidad

Tom Vezo / Rufous tailed hummingbird on nest {Amazilia tzacatl} Tortugero NP, Costa Rica

Pete Oxford / White bellied hummingbird in nest {Amazilia chionogaster} Machu Pichu, Peru

Kim Taylor / Digital composite - white chested emerald hummingbird {Amazilia chionopectus} male.

Luiz Claudio Marigo / Versicolored emerald hummingbird {Amazilia versicolor} SE Brazil

Luiz Claudio Marigo / Versicolored emerald hummingbird {Amazilia versicolor} SE Brazil

Michael & Patricia Fogden / Snowy-bellied Hummingbird (Amazilia edward) male feeding and pollinating Porterweed (Stachytarpheta sp) flowers, rainforest, Costa Rica

Michael & Patricia Fogden / Snowy-bellied Hummingbird (Amazilia edward) male flying near Porterweed (Stachytarpheta sp) flowers, rainforest, Costa Rica

Michael & Patricia Fogden / Blue-chested Hummingbird (Amazilia amabilis) feeding on nectar from flowers (Hamelia sp) rainforests of Costa Rica

Michael & Patricia Fogden / Steely-vented Hummingbird (Amazilia saucerrottei) feeding and pollinating Porterweed (Stachytarpheta sp) flowers, cloud forest, Costa Rica

Michael & Patricia Fogden / Rufous-tailed Hummingbird (Amazilia tzacatl) male feeding on yellow Cappel (Palicourea lasiorhachis) flowers, La Selva Biological Research Station, Costa Rica

Konrad Wothe / Blue-tailed Hummingbird (Amazilia cyanura) hovering near red flowers, Honduras

Konrad Wothe / Blue-tailed Hummingbird (Amazilia cyanura) hovering, Honduras

Konrad Wothe / Blue-tailed Hummingbird (Amazilia cyanura) hovering, Honduras

Michael & Patricia Fogden / Steely-vented Hummingbird (Amazilia saucerrottei) feeding at and pollinating Porterweed (Stachytarpheta sp) flowers, Monteverde Cloud Forest Reserve, Costa Rica