Tony Wu / Siberian flying squirrel (Pteromys volans orii) carrying sticks of Japanese elm (Ulmus davidiana var. japonica) back to nest; enjoying eating one before entering nest. Hokkaido, Japan. February.
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Marie Read / Ruby-throated hummingbird (Archilochus colubris) male flies in to feed on nectar from Eastern red columbine flower (Aquilegia canadensis), Freeville, New York, USA, June.
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Marie Read / Eastern bluebird (Sialia sialis) male feeding on Winterberries (Ilex verticillata) before flying off, Freeville, New York, USA, January.
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Robert Thompson / A fallen Sweet chestnut fruit (Castanea sativa) lying on the woodland floor, with a tree trunk covered in Textured lungwort (Lobaria scrobiculata) lichen, UK. October.
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Oliver Wright / Marbled white butterfly (Melanargia galathea) sequence showing landing and taking off from a Greater knapweed (Centaurea scabiosa) flower. Yorkshire, UK. Digital composite.
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Lewis Jefferies / Blackfinned anemonefish (Amphiprion nigripes) family seeks shelter in safety of Anemone's stinging tentacles, South Ari Atoll, Maldives, Indian Ocean.
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David Pattyn / Great crested grebe (Podiceps cristatus) with young chicks on the back among Fringed water lilies (Nymphoides peltata) Lake Kerkini, Greece, July.
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Nick Upton / White stork (Ciconia ciconia) with three chicks in nest at top of an Oak tree, gaping in hot sunshine with one exercising its wings, Knepp Estate, Sussex, UK, June.
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John Cancalosi / Gila Woodpecker (Melanerpes uropygialis) bringing food to nest in Saguaro cactus (Carnegiea gigantea) before leaving, Sonoran Desert, Arizona, USA.
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John Chan / Monarch Butterfly (Danaus plexippus) nectaring on a Sweet scabious (Scabiosa atropurpurea), Orange County, California, USA, May.
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Carlos Zorrilla / Male Orchid bee (Euglossini sp.) on an orchid (Lycomormium ecuadorense) flower trying to remove pollinia attached to its back, Ecuador, April.
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Nick Upton / Common carder bumblebee (Bombus pascuorum) nectaring on a Dandelion (Taraxacum officinale) flowerhead among many Common daisies (Bellis perennis) on a lawn left unmown to allow wild flowers to bloom t...
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John Chan / Monarch butterfly (Danaus plexippus) taking flight from a Pride of madeira (Echium candicans) after contact with a Honey bee (Apis mellifera), Southern California, USA, April.
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Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) depositing eggs on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.
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Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) preparing to lay another egg on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.
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Rose Summers / Eurasian beaver (Castor fiber) swimming over to a willow, it clambers on to a branch before beginning to feed on the surrounding leaves, Devon, England, UK.
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Solvin Zankl / Female Acorn weevil (Curculio glandium) boring into oak tree acorn to lay eggs, Lower Saxonian Elbe Valley Reserve, Germany, September.
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John Chan / Group of Brent geese (Branta bernicla) foraging in Eelgrass (Zostera marina) bed, Bolsa Chica Ecological Reserve, Southern California, USA, March.
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Brian Bevan / Melanistic grey squirrel (Sciurus carolinensis) searching for, finding and eating chestnuts amongst autumn leaves, Bedfordshire, UK, October.
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Brian Bevan / Grass snake (Natrix natrix) at pond edge sensing with tongue, Bedfordshire, UK, September.
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Brian Bevan / Grass snake (Natrix natrix) sensing with tongue while swimming through duckweed in pond, Bedfordshire, UK, September.
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Shane Gross / Red mangrove (Rhizophora mangle) propagules / plantlets which become fully mature plants before dropping off the parent tree to drift away and establish a new tree. Bahamas.
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Ross Hoddinott / Common blue butterfly (Polyommatus icarus) resting on Devil's bit scabious (Succisa pratensis). Devon, England, UK. August.
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Guy Edwardes / Bonnet mycena fungus (Mycena galericulata) and Holly (Ilex aquifolium) seedling, New Forest National Park, England, UK. October.
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Staffan Widstrand / Wild Wonders of China / Banyan fig tree (Ficus benjamina), one single individual tree, Banyan garden protected forest, Kenting National Park, Taiwan
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Jack Dykinga / Desert lilies (Hesperocallis undulata) flowering in spring on dunes at dawn. Mohawk Dunes, Barry M. Goldwater Range, Sonoran Desert, Arizona, USA.
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Stephen Dalton / Orange tip butterfly (Anthocharis cardamines) male in flight amongst Lady's smock or Cuckooflower (Cardamine pratensis),England.
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Shane Gross / Dugong (Dugong dugon) feeding on Tapegrass (Halophila stipulacea), accompanied by juvenile Golden trevally fish (Gnathanodon speciosus). Marsa Alam, Egypt.
Jack Dykinga / Horseshoe Bend of the Salt River with Saguaro cacti (Carnegiea gigantea), Arizona, USA.
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Jack Dykinga / Saguaro cacti (Carnegiea gigantea) Cabeza Prieta National Wildlife Refuge, Arizona, USA.
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Shane Gross / Lemon shark juvenile (Negaprion brevirostris) swimming in mangrove habitat near blue crab (Callinectes sapidus), a prey species for the shark. Eleuthera, Bahamas.
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Shane Gross / Lemon shark juvenile (Negaprion brevirostris) trying to feed on the leaves of a red mangrove (Rhizophora mangle). As pups, the sharks have to learn to hunt for themselves and sometimes make mistakes....
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Jeff Foott / Mexican giant cardon cactus (Pachycereus pringlei) and Boojum tree (Fouquieria columnaris) in Sonoran Desert, rainbow in background. Catavina, Valle de los Cirios Reserve, Baja California, Mexico.
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Paul Harcourt Davies / Species rich alpine meadow with Orange lily (Lilium bulbiferum), Meadow clary (Salvia pratensis) and Yellow rattle (Rhinathus sp). View towards Campitello di Fassa and mountains, Fassa Valley, Dolomit...
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Shane Gross / Green turtle (Chelonia mydas) feeding on Turtlegrass (Thalassia testudinum) seagrass bed. The Bahamas.
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Jack Dykinga / Joshua Trees (Yucca brevifolia) of the Mojave Desert at dawn encircled with flowering lupines. (Lupinus sp,) Mohave County, Castaneda Wash, Arizona, USA.
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Edwin Giesbers / RF - White-legged damselfly (Platycnemis pennipes) peering over Oxeye daisy (Leucanthemum vulgare) flower. The Netherlands. August. (This image may be licensed either as rights managed or royalty free...
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Edwin Giesbers / Orange tip butterfly (Anthocharis cardamines), two females on Cuckooflower (Cardamine pratensis) in marshy grassland, egg visible on stem. April 2009.
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Edwin Giesbers / Orange tip butterfly (Anthocharis cardamines) two females on Cuckooflower (Cardamine pratensis). The Netherlands. March.
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Juergen Freund / Firefly (Lampyridae) trails on beach at night, Palm tree silhouetted against milky way. Oak Beach, Port Douglas, Far North Queensland, Australia. 2016.
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Lukas Schaefer / Cotton grass (Eriophorum scheuchzeri) swaying in the wind, Puster Valley, Northern Italy, June.
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Lukas Schaefer / Tracking shot of Cotton grass (Eriophorum scheuchzeri) backlit, Puster Valley, Italy, June.
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Ingo Arndt / Blue tit (Cyanistes caeruleus) perched on tip of a Teasel (Dipsacus fullonum) Hessen, Germany. November.
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Ingo Arndt / Blue tit (Cyanistes caeruleus) perched on Teasel (Dipsacus fullonum), Hessen, Germany. November.
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Ingo Arndt / Female Great spotted woodpecker (Dendrocopos major) perched on Birch tree (Betula sp.) feeding in winter, Hessen, Germany. November.
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Ingo Arndt / Great tit (Parus major) perched on Wild teasel (Dipsacus fullonum) stem, Hessen, Germany. November.
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Ingo Arndt / Marsh tit (Parus palustris) on Blackthorn (Prunus spinosa) branch with berries, Hessen, Germany. November.
