David Tipling / Spoonbills (Platalea Leucorodia) pair collecting nesting material along the shore, Holkham, north Norfolk, England, UK. April.

Kim Taylor / Marbled white butterfly (Melanargia galathea) attempts to dislodge another Marbled white from a Lesser knapweed flower (Centaurea nigra). The animal fails and then returns to the other flower to feed....

Kim Taylor / Red mason bee (Osmia bicornis) female enters frame and approaches a suitable nest hole but discovers that the nest is already occupied. The occupant fends off the female and forces it away. UK. May.

Stefan Christmann / Emperor penguins (Aptenodytes forsteri) pair, standing face to face sheltering their chick, aged 3 months, Atka Bay, Antarctica.

Stefan Christmann / Group of Emperor penguins (Aptenodytes forsteri) most likely females, gliding over the ice, returning from the open ocean after fishing bringing back food for their chicks, Atka Bay, Antarctica.

Richard Sidey / Black-browed albatrosses (Thalassarche melanophris) pair, courtship display, Falkland Islands. January.

Jack Perks / Common eider duck (Somateria mollissima) males displaying to female on beach, Seahouses, Northumberland, England, UK, April.

David Gallan / Superby lyrebird (Menura novaehollandiae) male displays whilst mating with female on display mound,Tathra, New South Wales, Australia, July. Taken with trail camera.

Jack Perks / European spider crab (Hyas araneus) entering frame, stopping to feed on seabed before walking off into Common eelgrass (Zostera marina), Swanage pier, Dorset, England, UK, English Channel, September.

Lucas Bustamante / Painted ghost crab (Ocypode gaudichaudii) buried in sand, Santiago Island, Galapagos Islands.

Lucas Bustamante / Great frigate birds (Fregata minor) pair in courtship display, male with gular sac inflated, North Seymour Island, Galapagos Islands.

Inaki Relanzon / Ring-tailed lemur (Lemur catta) female carrying infant on her back, portrait, Anja reserve, Madagascar. Endangered.