Jenny E. Ross / Polar Bear (Ursus maritimus) sub-adult male on cliff searching for eggs in Brunnich's Guillemot nests, as gulls look on from above. This unusual behaviour happens when when lack of sea-ice prevents t...

Andy Rouse / 2020VISION / Wild boar (Sus scrofa) female in woodland undergrowth smelling air for scent of human, Forest of Dean, Gloucestershire, UK, March. Photographer quote: 'I am not sure if it was my lack of smelly shower...

Georgette Douwma / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

Georgette Douwma / Rescued battery hens with rooster. The chickens often lack feathers when they come out of the battery barns. UK.

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, UK, Sequence 5/5 , The final web is complete. Note that although all the final sticky spirals are visible, most of the radials are invisibl...

Solvin Zankl / Seeds of Oxeye daisy (Chrysanthemum leucanthemum), Europe. Dispersal is coincidental by wind, animals or water. The seeds lack any obvious structures for specialised dispersal.

Rod Williams / Lac Alaotra bamboo lemur juvenile {Hapalemur griseus alaotrensis} Madagascar Lack

Phil Savoie / Early bumblebee (Bombus pratorum), newly emerged male with characteristic yellow collar and lack of stinger. Standing on human finger, Monmouthshire, Wales, UK. May.

Phil Savoie / Early bumblebee (Bombus pratorum), newly emerged male with characteristic yellow collar and lack of stinger. Standing on human finger, Monmouthshire, Wales, UK. May.

Phil Savoie / Early bumblebee (Bombus pratorum), newly emerged male with characteristic yellow collar and lack of stinger. Standing on human finger, Monmouthshire, Wales, UK. May.

Fabrice Cahez / Lack-winged Stilt (Himantopus himantopus) Aude, France, July.

Fabrice Cahez / Lack-winged Stilt (Himantopus himantopus) Aude, France, July.

Ingo Arndt / Female Winter moth (Operophtera brumata), note lack of wings, Germany

Ingo Arndt / Female Winter moth (Operophtera brumata), note lack of wings, Germany

Gerrit Vyn / Chinese bird photographers on the Rudong mudlfats in pursuit of critically endangered species Spoon-billed sandpiper (Calidris pygmaea) There is a general lack of knowledge about proper ethics around...

Tim Laman / Ashy robin (Poecilodryas albispecularis albispecularis) Arfak Mountains, West Papua, New Guinea. Endemic.

John Cancalosi / Close up of a polished cross section of Breccia, sedimentary rock with angled clasts showing lack limited transportation before deposition, Arizona, USA.

Juergen Freund / Fresh skeleton of a Green turtle (Chelonia mydas) still with cartilage intact. Most likely starved due to lack of seagrass beds because of floods and cyclone damage. Townsville, Queensland, Australia...

Jabruson / Firewood collected from Waza National Park. Inefficient monitoring and lack of controls allow enterprising merchants to remove and collect wood from the Waza National Park and surrounding hinterland,...

Jabruson / Firewood collected from Waza National Park. Inefficient monitoring and lack of controls allow enterprising merchants to remove and collect wood from the Waza National Park and surrounding hinterland,...

Jabruson / Firewood collected from Waza National Park. Inefficient monitoring and lack of controls allow enterprising merchants to remove and collect wood from the Waza National Park and surrounding hinterland,...

Jabruson / Women primarily control the sale of charcoal and wood in Sao Tome market, Sao Tome, Democratic Republic of Sao Tome and Principe, Gulf of Guinea. Lack of cooking fuels puts pressure on natural resourc...

Jabruson / Women selling wood for fuel in Sao Tome market, Sao Tome, Democratic Republic of Sao Tome and Principe, Gulf of Guinea. Lack of cooking fuels puts pressure on natural resources and much comes from woo...

Jabruson / Women primarily control the sale of charcoal in Sao Tome market, Sao Tome, Democratic Republic of Sao Tome and Principe, Gulf of Guinea. Lack of cooking fuels puts pressure on natural resources and mu...

Jabruson / Alequadio Toma holds a piece of freshly made charcoal. The fuel is being readied for collection after its manufacture near the Sao Nicolau Plantation - close to the Obo National Park and the Bom Suces...

Jabruson / Alequadio Toma & Liticia da Cruz prepare charcoal for collection after its manufacture near the Sao Nicolau Plantation - close to the Obo National Park and the Bom Sucesso Botanic Gardens, Sao Tome, D...

Jabruson / Firewood collection from Waza National Park. Inefficient monitoring and lack of controls allow enterprising merchants to remove and collect wood from the Waza National Park and surrounding hinterland....

Jabruson / Firewood collection from Waza National Park. Inefficient monitoring and lack of controls allow enterprising merchants to remove and collect wood from the Waza National Park and surrounding hinterland....

Rolf Nussbaumer / Black vulture (Coragyps atratus) group of adults eating thousands of dead fish floating on lake, Dinero, Lake Corpus Christi, South Texas, USA. Fish died as result of drought and lack of oxygen

Solvin Zankl / Common fruit fly (Drosophila melanogaster) White type mutant (eyes lack pigmentation and appear white) laboratory culture. Vienna Drosophila RNAi Center, Institute for Molecular Pathology, Austria

Solvin Zankl / Common fruit fly (Drosophila melanogaster) White type mutant (eyes lack pigmentation and appear white) laboratory culture. Vienna Drosophila RNAi Center, Institute for Molecular Pathology, Austria

Paul Harcourt Davies / Large Horsefly (Tabanus bovinus) showing reflective eyes that lack the coloured stripes of some species, Italy

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / Rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / Rescued battery hens with rooster. The chickens often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / Rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

Stephen Dalton / Destruction of woodland understory by Fallow deer {Dama dama} also note the lack of branches on the lower part of the shrubs, Leaf debris has covered much of the eroded ground, Sussex, UK

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, UK, Sequence 3/5, The temporary spirals are in place, now the spider is constructing the main spirals, removing the temporary spirals on th...

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, UK, Sequence 4/5, The temporary spirals are in place, now the spider is constructing the main spirals, removing the temporary spirals on th...

Piotr Naskrecki / Pink leaf - young leaves of many rainforest plants lack chlorophyl during early stages of their development, Brownsberg Reserve, Surinam

Piotr Naskrecki / Pink leaves - young leaves of many rainforest plants lack chlorophyl during early stages of their development, Brownsberg Reserve, Surinam

Suzi Eszterhas / Californian Sealion {Zalophus californianus} Mother and pup climbing up cliff to avoid rising surf, San Miguel Island, California, USA Although pups can swim at birth, they lack strength and coordina...

Suzi Eszterhas / Californian Sealion {Zalophus californianus} Mother and pup climbing up cliff to avoid rising surf, San Miguel Island, California, USA Although pups can swim at birth, they lack strength and coordina...

Solvin Zankl / Seeds of Oxeye daisy (Chrysanthemum leucanthemum), Europe. Dispersal is coincidental by wind, animals or water. The seeds lack any obvious structures for specialised dispersal.

Solvin Zankl / Seeds of Oxeye daisy (Chrysanthemum leucanthemum), Europe. Dispersal is coincidental by wind, animals or water. The seeds lack any obvious structures for specialised dispersal.

Tui De Roy / Stewart Island Brown Kiwi (Apteryx australis lawryi) female, rear view showing fur like feathers and complete lack of tail, Ocean Beach, Stewart Island, New Zealand

Norbert Wu / Mushroom Soft Coral (Anthomastus ritteri) deep sea species is white due to lack of any symbiotic algae (Zooxanthellae) in body, Monterey, California

Norbert Wu / Mushroom Soft Coral (Anthomastus ritteri) deep sea species is white due to lack of any symbiotic algae (Zooxanthellae) in body, Monterey, California

Rod Williams / Lac Alaotra bamboo lemur juvenile {Hapalemur griseus alaotrensis} Madagascar Lack

Nigel Cattlin / Greenhouse grown Tomatoes (Solanum lycopersicum) on canes where the fruit is suffering from severe blossom end rot, Berkshire, England, UK. August

Eric Baccega / Female white or bleached tiger (Panthera tigris) with her cub, aged 10 days. This female tiger is a hybrid crossed from a Siberian tiger and Bengal tiger, has blue eyes and white fur caused by a lack...

Paul D Stewart / Coloured lithograph of plesiosaur and ichthyosaur, a contemporary continental version of the wall chart by Benjamin Waterhouse Hawkins entitled 'Waterhouse Hawkins Diagrams of the Extinct Animals'. He...

Paul D Stewart / Portrait of John Gould (14 September 1804 - 3 February 1881). Engraving by T.H. Maguire 1849 as part of the friends of the Ipswich Museum series. Gould was a wildlife illustrator and ornithologist bor...

Paul D Stewart / A Galapagos Mockingbird, from the collection of the Charles Darwin Research Station on Galapagos. While actually on the Beagle voyage, it was the mockinbirds, and not the celebrated finches gave Darwi...

Paul D Stewart / Two Galapagos Mockingbirds (right, upper from Espanola lower from San Cristobal), three Galapagos finch species (upper left) and Yellow Warbler (gold, lower left), from the collection of the Charles D...

Paul D Stewart / A group of Darwin's finches, Geospizinae, from the collection of the Charles Darwin Research Station on Galapagos, showing a range of beak sizes and shapes. Darwin originally misidentified the finches...

Paul D Stewart / Illustration from page 379, 'Journal of Researches' 2nd Edition 1845 Charles Darwin. The contrasting beaks of four Galapagos finches, three Geospizinae genus and one Certhidea (Warbler finch). Darwin...

Paul D Stewart / 1858 illustration of marine monsters by Benjamin Waterhouse Hawkins. Plate 23, to face page 33, of the New Edition, postumously published, of William Buckland's 'Geology and Mineralogy' - part of the...

Gary Braasch / Midnight sun at 2am over the nearly ice-free Arctic Ocean, Barrow, Alaska, USA, Arctic Ocean. July 29th, 2012.The lack of ice is indicative of the loss of the Arctic sea ice cover.

Gary Braasch / Aerial view of thousands of Pacific walrus (Odobenus rosmarus divergens) coming ashore near Point Lay, Alaska, USA. Arctic Ocean, August 23, 2015. Thousands of Pacific walrus haul out very early on th...

Robin Chittenden / Guillemot (Uria aalge) in winter plumage sitting among the foam on beach, believed to be dying of starvation due to a seabird wreck caused by lack of fish, Blakeney Point, Norfolk, UK. November 2021.

Jiri Lochman / Forest red-tailed black cockatoo (Calyptorhynchus banksii naso) male, head portrait, Perth Zoo, Western Australia. Captive. Vulnerable - due to high rates of deforestation and lack of suitable tree ho...

Alex Mustard / Detail of rhinophores and toxic lack markings on a Funeral nudibranch (Jorunna funebris). Dauin, Dauin Marine Protected Area, Dumaguete, Negros, Philippines. Bohol Sea, tropical west Pacific Ocean.

Nigel Cattlin / Bitter pit, dark spots in the flesh of an apple caused by a lack of calcium (Calcium deficiency) late in the season in dry conditions.

Nick Garbutt / Polar bear (Ursus maritimus) female with cub swimming in open water, lack of ice may be attributable to climate change. Woodfjorden, Spitsbergen, Svalbard, Norway. July 2017.

Nick Garbutt / Polar bear (Ursus maritimus) female and cub wading through water, tourists taking photographs from boat in background. Lack of sea ice may be due to climate change. Woodfjorden, Spitsbergen, Svalbard,...

Nick Garbutt / Polar bear (Ursus maritimus) female and cub wading through water, tourists taking photographs from boat in background. Lack of sea ice may be due to climate change. Woodfjorden, Spitsbergen, Svalbard,...

Jack Dykinga / Details of wood grain structure of Arizona white oaks (Quercus arizonica). Stress from lack of water and pest infection can cause elaborate swirls and intricate patterns. Conelo Hills, near Sonoita Co...

Jack Dykinga / Details of wood grain structure of Arizona white oaks (Quercus arizonica) Stress from lack of water and pest infection can cause elaborate swirls and intricate patterns. Dragoon Mountains, Coronado Na...

Paul Harcourt Davies / Ploughshare orchid (Serapias vomeracea) colourless morph with flowers lacking colour due to lack of anthocyanins. Umbria, Italy, May.

Nigel Cattlin / Twisted flag leaf a symptom of copper deficiency in a wheat crop and a lack of nutrient minerals in the soil

Erlend Haarberg / Common guillemot (Uria aalge), Hornoya island. In the last decades, the number of guillemots has decreased drastically along the Norwegian coast, because they do not manage to raise their young due to...