Hermann Brehm / Black necked grebe (Podiceps nigricollis) adult brings food to chicks on mate's back, Germany

Nick Upton / Hairy-footed flower bee (Anthophora plumipes) female returning to her nest burrow in an earth bank to provision it with pollen attached to her hind legs, Cornwall, UK, April.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) toboganning / sliding across sea ice to provision its chick. Atka Bay, Antarctica. January.

Nick Upton / Leafcutter / Rose-cutter bee (Megachile willughbiella) lands at its nest in a Bamboo tube in an insect hotel to provision it with pollen carried on the long hairs under its abdomen, Wiltshire, UK, Jul...

Chris Gomersall / Common kestrel (Falco tinnunculus) adult male at nest box. Hula Valley, Israel. January. Natural predators are encouraged by the provision of nest boxes by local farmers.

John B Free / Honey Bee (Apis mellifera) tending to a cell at the nest. The bee will provision the cell with pollen and nectar ('bee bread') from its pollen basket or 'corbicula'.

Jiri Lochman / Spider hunter wasp / Orange spider wasp (Cryptocheilus bicolor) female, transporting anesthetized Huntsman spider (Sparassidae) into her nest as a food provision for the wasp larva, Mount Kaputar Nati...

Jiri Lochman / Spider hunter wasp (Episyron sp.) female, excavating nest chamber with an anesthetized Wolf spider (Lycosidae) ready to be placed in there as food provision for wasp larva, Fortescue River Estuary, Pi...

Jiri Lochman / Spider hunter wasp (Episyron sp.) female, excavating nest chamber with an anesthetized Wolf spider (Lycosidae) ready to be placed in there as food provision for wasp larva, Fortescue River Estuary, Pi...

Jiri Lochman / Spider hunter wasp / Golden spider wasp (Cryptocheilus bicolor) female, transporting anesthetized Huntsman spider (Sparassidae) into her nest as food provision for wasp larva, Mount Kaputar National P...

Jiri Lochman / Spider hunter wasp (Episyron sp.) female, transporting anesthetized spider into nest, as food provision for wasp larva, Zuytdorp National Park, south of Shark Bay, Western Australia. (Pompilidae)

Jiri Lochman / Spider hunter wasp (Episyron sp.) female, transporting anesthetized Wolf spider (Lycosidae) to nest as food provision for wasp larva, Yalgorup National Park, south of Perth, Western Australia. (Pompi...