Kim Taylor / Bachacs / Leafcutter ants {Atta cephalotes} carrying sections of Cocoa leaf bearing 'riders' thought to ward off parasitic flies which would otherwise lay their eggs on the pieces of leaf. Trinidad, W...

Dave Bevan / Female Giant wood wasp (Uroceras gigas) inserting ovipositor into tree stump to lay eggs, Carmarthenshire, Wales, UK, September.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) digging their nests by night with stars during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore at twilight during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Richard Du Toit / Burchell's Zebra (Equus burchellii) reacting to parasitic Bot Fly (Oestridae) trying to lay eggs on it, KwaZulu-Natal, South Africa

Charlie Summers / Black Bear (Ursus americanus) sleeping in a Sitka Spruce tree (Picea sitchensis) alongside Anan Creek, Alaska, July.

Steven Kazlowski,Steven Kazlowski / Polar bear (Ursus maritimus) juvenile spreading body weight over thin newly forming pack ice, trying not to break through, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North...

Roland Seitre / Olive Ridley Sea Turtle (Lepidochelys olivacea) females coming ashore to lay eggs during an arribada nesting event, Ostional Beach, Costa Rica

Ingo Arndt / Olive Ridley Sea Turtle (Lepidochelys olivacea) females coming ashore to lay eggs during an arribada nesting event, Ostional Beach, Costa Rica

Ross Hoddinott / 2020VISION / Common frog (Rana temporaria) portrait, close-up of eye, Cornwall, UK. January. Did you know? Female Common frogs can lay up to 2000 eggs.

Andrew Parkinson / 2020VISION / A line of Mallard (Anas platyrhynchos) ducklings swimming on a still lake, Derbyshire, England, UK, June. Did you know? A Mallard duck will lay more than half her body weight in eggs.

Ross Hoddinott / 2020VISION / Marsh fritillary butterfly {Euphydrayas aurinia} backlit on plant stem, Dunsdon, near Holsworthy, Devon, UK. June. Did you know? Marsh fritillary butterflies lay 350 eggs in one batch.

Danny Green / 2020VISION / Viviparous / Common lizard (Zootoca /Lacerta vivipara) portrait, Staffordshire, England, UK, April. 2020VISION Book Plate. Did you know? Common lizards are both able to lay eggs and give birth.

Nick Upton / 2020VISION / Mallard Duck (Anas platyrhynchos) female nesting in ornamental stone flowerpot among Pansies (Viola x wittrockiana). Parade Gardens Park, Bath, UK, June. Did you know? A female mallard may lay more th...

Solvin Zankl / Female Olive ridley sea turtle (Lepidochelys olivacea) swimming from the open ocean towards the beach of Ostional, Costa Rica, Pacific Ocean to lay its eggs in the warm sand, November

Michel Roggo / Sockeye / Red Salmon (Oncorhynchus nerka), female digging to lay eggs on spawning ground, Adams river, British Columbia, Canada 2006

Andy Sands / Acorn weevil (Curculio glandium) drilling hole in developing acorn in which to lay egg, UK, Captive, sequence 1/4

Wild Wonders of Europe / Zankl / Female Loggerhead turtle (Caretta caretta) crawling up beach in search of spot to lay eggs, Dalyan Delta, Turkey, August 2009

Andrew Parkinson / Flightless dung beetle {Circellium bacchus) female rolling buffalo dung to lay egg in S Africa

Andrew Parkinson / Flightless dung beetle {Circellium bacchus} female rolling buffalo dung ball to lay egg in , Addo Elephant park, South Africa

David Kjaer / Juvenile European cuckoo {Cuculus canorus} fed by Reed warbler {Acrocephalus scirpaceus}. Bucks, UK. Cuckoos lay their eggs in the nests of reed warblers and when they hatch, the warbler mother will a...

Doug Perrine / Female Olive Ridley turtles coming ashore to lay eggs {Lepidochelys olivacea} Costa Rica, Pacific Ocean (Non-ex).

Doug Perrine / Female Olive Ridley turtles coming ashore to lay eggs at sunset {Lepidochelys olivacea} Costa Rica, Pacific Ocean (Non-ex).

Ben Osborne / Olive ridley turtle emerging from sea at dusk. Costa Rica {Lepidochelys olivacea}

Chris Newbert / Pink Anemonefish (Amphiprion perideraion) in Magnificent Sea Anemone (Heteractis magnifica) the fish will bite the Anemone causing it to ball-up so the fish can lay or tend to their eggs at the foot o...

Fred Bavendam / Horseshoe Crab (Limulus polyphemus) group crawling ashore on the high tides of spring to lay their eggs in Delaware Bay's sandy beaches, New Jersey

Fred Bavendam / Horseshoe Crab (Limulus polyphemus) group crawling ashore on the high tides of spring to lay their eggs in Delaware Bay's sandy beaches, New Jersey

Michael Pitts / Komodo dragon about to lay eggs in burrow made in megapode mound (Varanus komodoensis) Komodo Is

Ben Osborne / Olive ridley turtle returns to sea at dawn. Costa Rica {Lepidochelys olivacea}

Juergen Freund / Group of Broadclub cuttlefish gathered as females lay eggs on reef {Sepia latimanus} Sulu-sulawesi seas, Indo-Pacific

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed flying-fox (Pteropus poliocephalus) colony, where temperatures exceeded 43°C, Grey-headed flying-fox (Pteropus poliocepha...

David Tipling / Melanesian megapode (Megapodius eremita) female excavating nest chamber to lay egg. Savo Island, Solomon Islands.

David Tipling / Melanesian megapode (Megapodius eremita) female excavating nest chamber to lay egg. Savo Island, Solomon Islands.

David Tipling / Melanesian megapode (Megapodius eremita) female excavating nest chamber in sand to lay egg. Savo Island, Solomon Islands.

David Tipling / Melanesian megapode (Megapodius eremita) female excavating nest chamber in sand to lay egg. Savo Island, Solomon Islands.

David Woodfall / Mattresses dumped in lay-by against Do not drop litter sign.

Phil Savoie / Painted nomad bee (Nomada fucata) female inspecting Yellow legged mining bee (Andrena flavipes) nest burrows to lay eggs in. Monmouthshire, Wales, UK, April.

Phil Savoie / Painted nomad bee (Nomada fucata) female, kleptoparasite of Yellow legged mining bee (Andrena flavipes), inspecting nests to lay eggs in. Monmouthshire, Wales, UK. April.

Pedro Narra / Green turtle (Chelonia mydas) females on beach to lay eggs, Bijagos Archipelago, Guinea Bissau. Endangered species.

Pedro Narra / Green turtle (Chelonia mydas) females on coast to lay eggs, Bijagos Archipelago, Guinea Bissau. Endangered species.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chick aged 20-24 weeks toboganning / sliding on ice whilst parents fish at sea. Atka Bay, Antarctica. January.

Nick Upton / Newt egg found on a 'spawning mop' made of a bundle of cloth left in a pond for female newts to lay eggs on, near Wells, Somerset, UK, April 2018.

Nick Upton / Member of the Reptile and Amphibian Group for Somerset checking a 'spawning mop' made of a bundle of cloth left in a dew pond renovated by the Mendip Ponds Project for female newts to lay eggs...

Nick Upton / Newt eggs found on a 'spawning mop' made of a bundle of cloth left in a pond for female newts to lay eggs on, near Wells, Somerset, UK, April 2018. Model released.

David Perpinan / Radiography of a Spider tortoise (Pyxis arachnoides) showing a characteristic of this species - they just lay one egg. Captive. Small repro only.

Nick Upton / Large rose sawfly (Arge pagana) preparing to lay eggs on a Rose bush in a garden, Wiltshire, UK, July.

Kim Taylor / Braconid wasp (Braconidae) trying to lay an egg on a Lesser willow sawfly (Nematus pavidus) larva, which pushes the wasp away with its body. Controlled conditions.

Kim Taylor / Braconid wasp (Braconidae) trying to lay an egg on a Lesser willow sawfly (Nematus pavidus) larva, which pushes the wasp away with its body. Controlled conditions.

Kim Taylor / Braconid wasp (Braconidae) trying to lay an egg on a Lesser willow sawfly (Nematus pavidus) larva, which pushes the wasp away with its body. Controlled conditions.

Piotr Naskrecki / Sand Wasp (Ammophila sp) carrying paralyzed caterpillar, on which she will lay her eggs in an underground burrow, Gorongosa National Park, Mozambique

Piotr Naskrecki / Horseshoe Crab (Limulus polyphemus) gathering on beach to lay eggs, seen under UV light, Delaware National Estuarine Research Reserve, Delaware

David Fleetham / Surfer exiting the water behind a group of Green sea turtles, (Chelonia mydas) on Ho'okipa Beach to lay eggs, Maui, Hawaii. April 2016.

David Fleetham / Green sea turtles (Chelonia mydas) on Ho'okipa Beach to lay eggs, Maui, Hawaii.

Greg Basco/ BIA / Olive Ridley Sea Turtle (Lepidochelys olivacea) female coming ashore to lay eggs, Ostional Beach, Costa Rica

Kim Taylor / Rose sawfly (Arge ochropus) female cutting a groove in a rose stem in which to lay her eggs. Surrey, England, UK, June.

Kim Taylor / Parasitic wasps (Braconidae) approaching caterpillar of Lesser willow sawfly (Nematus pavidus) to lay eggs on, Surrey, England, UK. June.

Kim Taylor / Parasitic wasps (Braconidae) approaching caterpillar of Lesser willow sawfly (Nematus pavidus) to lay eggs on, Surrey, England, UK. June.

Phil Savoie / Variegated meadowhawk dragonfly (Sympetrum corruptum) pair flying over Madison River to lay eggs. Montana, USA, June.

Phil Savoie / Variegated meadowhawk dragonfly (Sympetrum corruptum) pair flying over Madison River to lay eggs. Montana, USA, June.

Phil Savoie / Variegated meadowhawk dragonfly (Sympetrum corruptum) pair flying over Madison River to lay eggs. Montana, USA, June.

Phil Savoie / Variegated meadowhawk dragonfly (Sympetrum corruptum) pair flying over Madison River to lay eggs. Montana, USA, June.

Phil Savoie / Variegated meadowhawk dragonfly (Sympetrum corruptum) pair flying to lay eggs whilst mating, Madison River, Montana, USA, June.

Phil Savoie / Variegated meadowhawk dragonfly (Sympetrum corruptum) pair flying to lay eggs whilst mating, Madison River, Montana, USA, June.

Phil Savoie / Commn green darner dragonfly (Anax junius) pair flying to lay eggs, Madison River, Bozeman, Montana, USA, June.

Doug Wechsler / Diamondback terrapin (Malaclemys terrapin) female ready to lay eggs, trapped on road by barrier, Delaware Bay, New Jersey, USA, July.

Ingo Arndt / Olive Ridley Sea Turtles (Lepidochelys olivacea) females come ashore during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica. Finalist in Wildlife Photographer of the...

Ingo Arndt / The villagers of Ostional clean the beach of driftwood after a heavy storm, that the Olive ridley sea turtles (Lepidochelys olivacea) can lay their eggs during the next arribada (mass nesting event) u...

Ingo Arndt / The villagers of Ostional clean the beach of driftwood after a heavy storm, that the Olive ridley sea turtles (Lepidochelys olivacea) can lay their eggs during the next arribada (mass nesting event) u...

Ingo Arndt / The villagers of Ostional clean the beach of driftwood after a heavy storm, that the Olive ridley sea turtles (Lepidochelys olivacea) can lay their eggs during the next arribada (mass nesting event) u...

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) digging their nests during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) digging their nests by night with stars during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore at sunset during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore at sunset during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore at twilight during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore at twilight during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore at twilight during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore at twilight during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtles (Lepidochelys olivacea) females coming ashore during an arribada (mass nesting event) to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtle (Lepidochelys olivacea) female coming ashore to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtle (Lepidochelys olivacea) female coming ashore to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Olive ridley sea turtle (Lepidochelys olivacea) female coming ashore to lay eggs, Pacific Coast, Ostional, Costa Rica.

Ingo Arndt / Monarch butterflies (Danaus plexippus) mating, Michoacan, Mexico. Females lay their eggs on their journey north.

Ingo Arndt / Green turtle digging nest in sand to lay eggs, at night (Chelonia mydas) Sri Lanka

Jen Guyton / Red-eyed tree frog (Agalychnis callidryas) male sleeping on top of female while he waits for her to lay eggs. Costa Rica.

Jen Guyton / Red-eyed tree frog (Agalychnis callidryas) male sleeping on top of female while he waits for her to lay eggs. Costa Rica.

Jen Guyton / Red-eyed tree frog (Agalychnis callidryas) male sleeping on top of female while he waits for her to lay eggs. Costa Rica.

Lynn M. Stone / Atlantic Ghost Crab (Ocypode quadrata) female with egg cluster tucked underneath, making its way to lay eggs, Pinellas County, Florida, USA.

Chris Mattison / Common Lizard (Zootoca vivipara), giving birth to young in thin egg membranes, Derbyshire, England, UK. This species can both lay eggs and also give birth to live young in a thin egg membrane.

Chris Mattison / Common Lizard (Zootoca vivipara), giving birth to young in thin egg membranes, Derbyshire, England, UK. This species can both lay eggs and also give birth to live young in a thin egg membrane.

Chris Mattison / Common Lizard (Zootoca vivipara), giving birth to young in thin egg membranes, Derbyshire, England, UK. This species can both lay eggs and also give birth to live young in a thin egg membrane.

Cyril Ruoso / Common frog (Rana temporaria) and Fire salamander (Salamandra salamandra) during the breeding season sharing the same pond to lay eggs. Burgundy, France, March.

Kirkendall-Spring / Woman Camper reading in tent above Island Lake, Wind River Range, Bridger Wilderness, Bridger National Forest, Wyoming, USA. September 2015. Model released.

Kirkendall-Spring / Camper reading inside tent above Island Lake, Wind River Range, Bridger Wilderness, Bridger National Forest, Wyoming, USA. September 2015. Model released.