Edwin Giesbers / RF- Grey Heron (Ardea cinerea) taking off from reeds. The Netherlands. June. (This image may be licensed either as rights managed or royalty free.)

Wild Wonders of Europe / Widstrand / RF- Eastern white pelicans (Pelecanus onocrotalus) taking off from water, Danube delta rewilding area, Romania. May. (This image may be licensed either as rights managed or royalty free.)

Ross Hoddinott / 2020VISION / RF- Male Emperor Dragonfly (Anax imperator) in flight, Arne RSPB reserve, Dorset, England, UK, July. Did you know? Dragonflies spend up to six years as drab aquatic nymphs for only a few weeks as colo...

Ross Hoddinott / RF- Green-veined White Butterfly (Artogeia / Pieris napi) resting on bluebell. Lanhydrock, Cornwall, UK. May. (This image may be licensed either as rights managed or royalty free.)

Rolf Nussbaumer / RF- Rufous Hummingbird (Selasphorus rufus) female feeding in flight on Scarlet Gilia (Ipomopsis aggregata). Gila National Forest, New Mexico, USA. August. (This image may be licensed either as rights...

Edwin Giesbers / RF- Silhouette of a Mute Swan (Cygnus olor) in flight. The Netherlands. March. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF- White Stork (Ciconia ciconia) landing. The Netherlands. April. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF- Grey pansy butterfly (Junonia atlites) at rest with wings open. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF- Clipper butterfly (Parthenos sylvia) wings open, at rest on leaf. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF- Arctic tern (Sterna paradisaea) in flight, calling, Farne Islands, Northumberland, UK. June. (This image may be licensed either as rights managed or royalty free.)

Wild Wonders of Europe / Widstrand / RF- White tailed sea eagle (Haliaeetus albicilla) in flight, Flatanger, Norway, June. (This image may be licensed either as rights managed or royalty free.)

Wild Wonders of Europe / Widstrand / RF- Golden eagle (Aquila chrysaetos) flying in snow, Flatanger, Norway. November. (This image may be licensed either as rights managed or royalty free.)

Wild Wonders of Europe / Widstrand / RF- Griffon vultures (Gyps fulvus) feeding, Montejo de la Vega, Segovia, Castilla y Leon, Spain. March. (This image may be licensed either as rights managed or royalty free.)

Wild Wonders of Europe / Widstrand / RF- Herring gull (Larus argentatus) in low flight over water, Flatanger, Nord Trondelag, Norway. August. (This image may be licensed either as rights managed or royalty free.)

Wild Wonders of Europe / Widstrand / RF- White tailed sea eagle (Haliaeetus albicilla) in flight, taking prey from water, silhouetted at sunset. Flatanger, Nord Trondelag, Norway. August 2008. (This image may be licensed either as rights...

Wild Wonders of Europe / Widstrand / RF- White stork (Ciconia ciconia) in flight, La Serena, Extremadura, Spain. March. (This image may be licensed either as rights managed or royalty free.)

Wild Wonders of Europe / Widstrand / RF- Golden eagle (Aquila chrysaetos) landing in snow, Flatanger, Norway. November. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF- Madagascar moon moth (Argema mittrei) female, Madagascar, Africa. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF- Madagascar fruit bat / flying fox (Pteropus rufus) Berenty reserve, Madagascar, Africa. (This image may be licensed either as rights managed or royalty free.)

Wild Wonders of Europe / Widstrand / RF- White-tailed Sea Eagle (Haliaeetus albicilla) turning in flight, Flatanger, Norway, August. (This image may be licensed either as rights managed or royalty free.)

Ross Hoddinott / RF- Broad-bodied chaser dragonfly (Libellula depressa) on fern with veins in wings. Cornwall, UK. May. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF- Glasswing butterfly (Greta oto), Costa Rica. (This image may be licensed either as rights managed or royalty free.)

Rolf Nussbaumer / RF- American Robin (Turdus migratorius) male preening. Rocky Mountain National Park, Colorado, USA. June. (This image may be licensed either as rights managed or royalty free.)

Rolf Nussbaumer / RF- Lesser Long-nosed Bat (Leptonycteris curasoae) flying at night to feed on Agave flower (Agave sp). Tuscon, Arizona, USA. (This image may be licensed either as rights managed or royalty free.)

Rolf Nussbaumer / RF- Black-chinned Hummingbird (Archilochus alexandri) female in flight feeding on Texas Prickly Pear Cactus (Opuntia lindheimeri). Hill Country, Texas, USA. (This image may be licensed either as right...

Rolf Nussbaumer / RF- Female American Darter (Anhinga anhinga) drying wings on mangrove tree, Ding Darling National Wildlife Refuge, Sanibel Island, Florida, USA. December. (This image may be licensed either as rights...

Staffan Widstrand / RF- Ivory gull (Pagophila eburnea / alba) taking off from ice. Baffin Is, Canada. (This image may be licensed either as rights managed or royalty free.)

Staffan Widstrand / RF- Great grey owl (Strix nebulosa) in flight. Kuhmo, Finland. (This image may be licensed either as rights managed or royalty free.)

Staffan Widstrand / RF- Flock of European white storks (Ciconia ciconia) on migration. Tanzania. (This image may be licensed either as rights managed or royalty free.)