Pascal Kobeh / Red starfish (Odontaster validus) Antarctic peninsula, Bellingshausen Sea. Small reproduction only.

Franco Banfi / Sea star (Odontaster validus) on Ribbon kelp (Durvillaea antarctica), Antarctic Peninsula, Antarctica, Southern Ocean.

Franco Banfi / Sea star (Odontaster validus), right, and Sea star (Diplasterias brucei), left, on seabed, Antarctic Peninsula, Antarctica, Southern Ocean.

Franco Banfi / Sea stars (Odontaster validus) feeding on seabed, Antarctic Peninsula, Antarctica, Southern Ocean.

Franco Banfi / Sea star (Odontaster validus) feeding on penguin's skull on the seabed, Antarctic Peninsula, Antarctica, Southern Ocean.

Franco Banfi / Sea stars (Odontaster validus) gathered on the seabed, Antarctic Peninsula, Antarctica, Southern Ocean.

Melvin Grey / Purple-throated mountain gem (Lampornis calolaemus) adult female - about to feed from flower, Atlantic Rainforest, Costa Rica.

Paul Hobson / Rivoli's hummingbird (Eugenes fulgens) nectaring on Fuchsia (Fuchsia sp) flower. Costa Rica.

Paul Hobson / Green-crowned brilliant (Heliodoxa jacula), three feeding on Lobster-claw (Heliconia sp) flower in rain. Costa Rica.

Paul Hobson / Violet sabrewing hummingbird (Campylopterus hemileucurus) nectaring on Orchid. Costa Rica.

Phil Savoie / Green-crowned brillian hummingbird (Heliodoxa jacula) visiting Torch ginger flower (Etlingera elatior), Poas Volcano National Park Costa Rica

Graeme Guy/ BIA / Green-breasted Mango (Anthracothorax prevostii) male feeding on flower nectar, Costa Rica

Bence Mate / White-throated Mountain Gem (Lampornis castaneoventris), Green-crowned Brilliant (Heliodoxa jacula) group of three with one in flight, Savegre, Costa Rica

Melvin Grey / Violet sabrewing hummingbird (Campylopterus hemileucurus) hummingbird male flying, feeding from flower, Juan Castro National Park Costa Rica.

Graeme Guy / Green Hermit (Phaethornis guy) hummingbird male feeding on flower nectar, Costa Rica

Graeme Guy / Green-breasted Mango (Anthracothorax prevostii) hummingbird feeding on flower nectar, Costa Rica

Graeme Guy / Violet-crowned Woodnymph (Thalurania colombica) hummingbird male feeding on flower nectar, Costa Rica

Bence Mate / Violet sabrewing (Campylopterus hemileucurus) in flight at feeding station, Monte Verde Cloud Forest, Costa Rica.

Glenn Bartley / Green Violet-ear (Colibri thalassinus), Costa Rica

Glenn Bartley / Violet-crowned Woodnymph (Thalurania colombica) female feeding on nectar, Costa Rica

Roland Seitre / Girl watching Violet Sabrewing Hummingbird (Campylopterus hemileucurus) feeding on flower. Captive. La Paz Waterfall Gardens, Poas, Costa Rica. Model released

Steve Gettle / Violet-crowned Woodnymph (Thalurania colombica) hummingbird male flying, Costa Rica

Bence Mate / Green crowned brilliant hummingbird (Heliodoxa jacula) male taking off to feed at feeder in garden, another waiting perched on lichen covered branch, Costa Rica, January. Winner, Eric Hosking award at...

Mary McDonald / Violet Sabrewing Hummingbird (Campylopterus hemileucurus) male hovering at feeder, Bosque de Paz, Costa Rica, Central America.

Gerrit Vyn / Male White-throated Mountain Gem (Lampornis castaneoventris). Tamalanca Mountains, Costa Rica. May.

Edwin Giesbers / Green crowned brilliant hummingbird (Heliodoxa jacula), Costa Rica

Rolf Nussbaumer / Costa's Hummingbird {Calypte costae} young male feeding on Sage flower, Tuscon, Arizona, USA, September

Tom Vezo / Green Violet-ear (Colibri thalassinus) hummingbird visiting flower, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding at and pollinating epiphytic Orchid (Elleanthus sp), Costa Rica

Michael & Patricia Fogden / Scaly-breasted Hummingbird (Phaeochroa cuvierii) near a Heliconia flower (Heliconia latispatha) in rainforest, Costa Rica

Michael & Patricia Fogden / Violet Sabre-wing (Campylopterus hemileucurus) immature hummingbird feeding and pollinating Coral Tree (Erythrina sp) flowers, cloud forest, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding, pollinating epiphytic orchid flower, cloud forest ecosystem, Costa Rica

Michael & Patricia Fogden / White-necked Jacobin (Florisuga mellivora) hummingbird male feeding on nectar from a Bromeliad flower, La Selva Biological Research Station, Rainforest, Costa Rica

Michael & Patricia Fogden / Green Hermit (Phaethornis guy) hummingbird feeding on and pollinating Coral Tree (Erythrina sp) flowers, Monteverde Cloud Forest Reserve, Costa Rica

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

Michael & Patricia Fogden / Magenta-throated Woodstar (Calliphlox bryantae) hummingbird male feeding on epiphytic Heath (Cavendishia complectens) nectar, rainforest, Costa Rica

Michael & Patricia Fogden / Fork-tailed Emerald (Chlorostilbon canivetii) hummingbird feeding on Gesneria (Kohleria spicata) flowers, rainforest ecosystem, Costa Rica

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

Michael & Patricia Fogden / Purple-throated Mountain-gem (Lampornis calolaemus) hummingbird female feeding and pollinating flower of epiphytic Heath (Cavendishia melastomoides) cloud forest, Costa Rica

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

Michael & Patricia Fogden / Bronzy Hermit (Glaucis aenea) hummingbird feeding and pollinating a Perfumed Passion Flower (Passiflora vitifolia) flower, rainforest, Costa Rica

Michael & Patricia Fogden / Green-crowned Brilliant (Heliodoxa jacula) hummingbird juvenile male feeding at and pollinating Ginger (Costus montanus) flowers, Monteverde Cloud Forest Reserve, Costa Rica

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

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 / 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 / Violet Sabre-wing (Campylopterus hemileucurus) hummingbird male at Ginger (Costus montanus) flowers, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Violet-crowned Woodnymph (Thalurania colombica) hummingbird male perched in lowland rainforest, Costa Rica

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

Gerry Ellis / Magnificent Hummingbird (Eugenes fulgens) nest with three eggs, Costa Rica

Adrian Davies / Green-crowned brilliant hummingbird (Heliodoxa jacula) nectaring on flower. Costa Rica.

Ingo Arndt / Green-breasted mango hummingbird (Anthracothorax prevostii) male in flight. Costa Rica.

Ingo Arndt / Green-breasted mango hummingbird (Anthracothorax prevostii) female in flight. Costa Rica.

Ingo Arndt / White-necked jacobin (Florisuga mellivora) hummingbird, male, in flight. Costa Rica.

Laurie Hedges / Male Admirable hummingbird (Eugenes spectabilis) perching on a branch, displaying using head feathers, Talamanca, Costa Rica.

Ernie Janes / Purple-throated mountaingem (Lampornis calolaemus) female Costa Rica.

Ernie Janes / Purple-throated mountain gem hummingbird (Lampornis calolaemus) female, Costa Rica.

Heather Angel / Volcano hummingbird (Selasphorus flammula) female nectaring on Hardy fuchsia (Fuchsia magellanica) in garden. Stamens brushing bird's chest feathers. Costa Rica.

Heather Angel / Purple throated mountain gem hummingbird (Lampornis calolaemus) hovering as it nectars on Porterweed (Stachytarpheta frantzii). Costa Rica.

John Shaw / Rufous-tailed hummingbird (Amazilia tzacatl) with heliconia plants adding color in the background. San Jose, Costa Rica, December.

Martin van Lokven / Magnificent Hummingbird (Eugenes fulgens) flying, Savegre Mountain Lodge, Costa Rica

Melvin Grey / Green-crowned brilliant hummingbird (Heliodoxa jacula) female hovering in front of flower, Atlantic cloud forest, Costa Rica

Melvin Grey / Green-crowned brilliant hummingbird (Heliodoxa jacula) female, Atlantic clouds forest, Costa Rica.

Melvin Grey / Green hermit hummingbird (Phaethornis guy) adult male in flight, Atlantic cloud forest, Costa Rica.

Melvin Grey / Green hermit hummingbird (Phaethornis guy) adult male - about to feed from flower. Atlantic slope cloud forest, Costa Rica.

Melvin Grey / Green Hermit hummingbird (Phaethornis guy) adult female flying in fornt of flower, lowland rainforest, Costa Rica. Medium repro only.

Melvin Grey / Scaly-breasted hummingbird (Phaeochroa cuvierii) adult, Atlantic Lowland Rainforest, Costa Rica.

Paul Hobson / Purple-throated mountain-gem (Lampornis calolaemus) nectaring at flower. Costa Rica.

Paul Hobson / Green-crowned brilliant (Heliodoxa jacula), two perched on Lobster-claw (Heliconia sp) flower. Costa Rica.

Paul Hobson / Green violetear (Colibri thalassinus) hummingbird nectaring on Fuchsia (Fuchsia sp) flower. Costa Rica.

Paul Hobson / Volcano hummingbird (Selasphorus flammula) nectaring on flower. Costa Rica.

Ingo Arndt / Green Hermit (Phaethornis guy) hummingbird male outline flying, Costa Rica

Ingo Arndt / Violet-crowned Woodnymph (Thalurania colombica) hummingbird male feeding on passion flower nectar, Costa Rica

Ingo Arndt / Green-breasted Mango (Anthracothorax prevostii) hummingbird male feeding on passion flower nectar, Costa Rica

Ingo Arndt / White-necked Jacobin (Florisuga mellivora) hummingbird male feeding on heliconia flower nectar, Costa Rica

Ingo Arndt / Green-breasted Mango (Anthracothorax prevostii) hummingbird male flying, Costa Rica

Ingo Arndt / Green-breasted Mango (Anthracothorax prevostii) hummingbird male flying, Costa Rica

Ingo Arndt / Green-breasted Mango (Anthracothorax prevostii) hummingbird male flying, Costa Rica

Ingo Arndt / Green-breasted Mango (Anthracothorax prevostii) hummingbird male flying, Costa Rica

Ingo Arndt / Green-breasted Mango (Anthracothorax prevostii) hummingbird male flying, Costa Rica

Ingo Arndt / Green-breasted Mango (Anthracothorax prevostii) hummingbird male flying, Costa Rica

Ingo Arndt / White-necked Jacobin (Florisuga mellivora) hummingbird male flying, Costa Rica

Ingo Arndt / White-necked Jacobin (Florisuga mellivora) hummingbird male flying, Costa Rica

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female siting on nest, Pacific coast mangroves area, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female perched on twig, Pacific coast mangroves area, Costa Rica, Endangered species.

Nick Hawkins / Female mangrove hummingbird - Mangrove hummingbird (Amazilia boucardi) female resting, perched on twig, Pacific coast mangroves area, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbirds (Amazilia boucardi) two chicks in nest, Pacific coast mangroves area, Costa Rica, Endangered species. Medium repro only.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female feeding chicks in nest, Pacific coast mangroves area, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) male perched on twig, Pacific coast mangroves area, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female perched on twig, Pacific coast mangroves area, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female perched on twig, Pacific coast mangroves area, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female feeding chick, Pacific coast mangroves area, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) chick balancing on twig, Pacific coast mangroves area, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female in flight feeding on Tea mangrove (Pelliciera rhizophorae) flower, Nicoya Peninsula, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female perched on twig, Nicoya Peninsula, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female feeding on Tea mangrove (Pelliciera rhizophorae) flower, Pacific coast mangroves, Nicoya Peninsula, Costa Rica, Endangered species.

Nick Hawkins / Mangrove hummingbird (Amazilia boucardi) female landing on Tea mangrove (Pelliciera rhizophorae) flower to feed, Pacific coast mangroves, Nicoya Peninsula, Costa Rica, Endangered species.

Dr. Axel Gebauer / Costa's Hummingbird (Calypte costae) perched on branch showing iridescence. Arizona-Sonora Desert Museum, Tuscon, Arizona, USA, Small repro only