Ingo Arndt / Caddisfly (Limnephilidae) case built out of sticks and bark fragments, Germany, November.

Ingo Arndt / Caddisfly (Limnephilus sp.) case built of sticks, wood fragments, seeds, snail shells and plant stems, Germany, November.

Ingo Arndt / Male Vogelkop Bowerbird (Amblyornis inornatus) constructing bower roof. Arfak Mountains, West Papua, Indonesia.

Pete Oxford / Huaorani Indian house. The houses are made by constructing a frame from cut logs and covering it with palm leaves. Gabaro Community, Yasuni National Park, Ecuador, June 2007.

Diane McAllister / Great blue heron (Ardea herodias) landing with branch for its mate, who is constructing their nest on a treetop. Venice Rookery, Florida, USA, January

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...

Duncan Murrell / Local field staff of the Borneo Nature Foundation constructing dams in the canals in the Sabangau (peat-swamp) Forest, to prevent drying out that increases the risk of forest fires. Central Kalimantan...

Duncan Murrell / Local field staff of the Borneo Nature Foundation constructing dams in the canals in the Sabangau (peat-swamp) Forest, to prevent drying out that increases the risk of forest fires. Central Kalimantan...

Nick Garbutt / Russet-backed oropendola (Psarocolius angustifrons), pair constructing nest. Manu Biosphere Reserve, Peru.

Ashley Cooper / The Krakken, a jack up barge, constructing wind turbines of the Walney offshore wind farm, lifts a nacelle into place. Cumbria, England, UK. September 2011

Ashley Cooper / The Krakken, a jack up barge, constructing wind turbines of the Walney offshore wind farm, uses a specialist cradle to lift a turbine blade into place. Cumbria, England, UK. September 2011

Ashley Cooper / The Krakken, a jack up barge, constructing wind turbines of the Walney offshore wind farm, uses a specialist cradle to lift a turbine blade into place. Cumbria, England, UK. September 2011

Ashley Cooper / The Krakken, a jack up barge, constructing wind turbines of the Walney offshore wind farm, uses a specialist cradle to lift a turbine blade into place. Cumbria, England, UK. September 2011

Ashley Cooper / Women constructing solar cookers at the Barefoot College in Tilonia, Rajasthan, India. The Barefoot College is a worldwide charity, founded by Bunker Roy, its aims are, education, drinking water, elec...

Ashley Cooper / Constructing traditional dug out canoe, Malawi, March 2015.

Jan Hamrsky / Case-building caddisfly larva (Limnephilus rhombicus), Europe, June, controlled conditions

Jan Hamrsky / Case-building caddisfly larva (Limnephilus rhombicus), Europe, June, controlled conditions

Jan Hamrsky / Case-building caddisfly larva (Limnephilus rhombicus), Europe, June, controlled conditions

Jan Hamrsky / Case-building caddisfly larva (Limnephilus rhombicus), Europe, June, controlled conditions

Jan Hamrsky / Case-building caddisfly larva (Limnephilus rhombicus), Europe, June, controlled conditions

Jan Hamrsky / Case-building caddisfly larva (Limnephilus rhombicus), Europe, June, controlled conditions

Jan Hamrsky / Case-building caddisfly larva (Limnephilidae), underwater, Europe, June, controlled conditions

Jan Hamrsky / Case-building caddisfly larva (Limnephilidae), underwater, Europe, June, controlled conditions

Nick Garbutt / Vitelline masked weaver (Ploceus velatus) male constructing / buidling its nest by weaving grass. Ndutu, Ngorongoro Conservation Area (NCA), Tanzania.

Jean E. Roche / Conservationists constructing holes to hold water, useful for Flamingos nesting. Salin de Giraud, Camargue, France, March 2017

David Pattyn / Little grebe (Tachybaptus ruficollis) pair mating during courtship season after constructing a nest platform on a pine tree branch. De Regte Nature Reserve, Goirle, the Netherlands. May

David Pattyn / Little grebe (Tachybaptus ruficollis) pair mating during courtship after first constructing a nest platform on a pine tree. De Regte Nature Reserve, Goirle, the Netherlands. May

Steve Downer / Male Three spined stickleback (Gasterosteus aculeatus) constructing nest, April. Captive.

Steve Downer / Male Three spined stickleback (Gasterosteus aculeatus) constructing nest, April. Captive.

Steve Downer / Male Three spined stickleback (Gasterosteus aculeatus) constructing nest, April. Captive.

Steve Downer / Garden cross spider (Aranea diadematus) constructing web.

Steve Downer / Garden cross spider (Aranea diadematus) constructing web.

Ingo Arndt / Caddisfly (Glyphotaelius pellucidus) case built out of leaves, Germany, November.

Ingo Arndt / Caddisfly (Potamophylax sp) case built out of rock fragments, Germany.

Ingo Arndt / Caddisfly (Phryganea bipunctata) case built out of bark fragments and sticks, Germany, November.

Ingo Arndt / Caddisfly (Limnephilus sp) case built out of seeds and snail shells, Germany.

Ingo Arndt / Male Vogelkop bowerbird (Amblyornis inornatus) constructing bower roof. Arfak Mountains, West Papua, Indonesia.

Tim Laman / Huli elder constructing a traditional vine and pole suspension bridge over a stream, Papua New Guinea, November 2010.

Tim Laman / Huli elder constructing a traditional vine and pole suspension bridge over a stream, Papua New Guinea, November 2010.

Tim Laman / Huli elder constructing a traditional vine and pole suspension bridge over a stream. Papua New Guinea, November 2010.

Jan Hamrsky / Case-building caddisfly larva (Triaenodes bicolor) on Horsetail (Equisetum sp), Europe, May. Controlled conditions.

MYN / Tim Hunt / Caddis fly (Limnephilus rhombicus) Barnt Green, Worcestershire, UK, April. meetyourneighbours.net project

MYN / Tim Hunt / Caddis fly (Limnephilus rhombicus) Barnt Green, Worcestershire, UK, April. meetyourneighbours.net project

MYN / Andrew Snyder / Close up of Paper wasps (Mischocyttarus sp.) constructing a linear nest, Kanuku Mountains, Guyana, July. Meetyourneighbours.net project.

MYN / Andrew Snyder / Paper wasps (Mischocyttarus sp.) constructing a long linear nest, Kanuku Mountains, Guyana, July. Meetyourneighbours.net project.

Peter Cairns / 2020VISION / Group of children and adults building bird boxes at a Fell Care Day, Cumbria, England, UK, October 2011.

Jan Hamrsky / Case-building caddisfly larva (Leptoceridae) Europe, July, controlled conditions

Jan Hamrsky / Case-building caddisfly larva (Ceraclea) in the shelter made of freshwater sponge (Spongilla lacustris) Europe, July, controlled conditions

Jussi Murtosaari / Moth (Semblis atrata) adult in habitat, central Finland, May.

Jussi Murtosaari / Moth (Semblis atrata) on leaf, central Finland, May.

Tom Gilks / Wind power technician constructing a turbine, Kisumu Region, Kenya

Ingo Arndt / Brown Gardener (Amblyornis inornatus) constructing the roof of a bower

D. Parer & E. Parer-Cook / Western Pebble-mound Mouse (Pseudomys chapmani) with pebble in jaw to build mound home, northwestern Australia

D. Parer & E. Parer-Cook / Western Pebble-mound Mouse (Pseudomys chapmani) constructing its mound of pebbles, Pilbara region, Western Australia, Australia

Gavin Hellier / Master Kite-maker constructing his world famous Kites, Kota Bharu, Kelantan State, Malaysia, 2008 image Model and Property released

Gary K. Smith / Stone picking machines constructing baulks prior to planting of potato crop, Norfolk, UK, May

Pete Oxford / Wasp (Polybia sp) constructing nest, Yasuni National Park, Amazon Rainforest, Ecuador

Paul Harris / 2020VISION / Family constructing a bug house, designed to encourage insects / wildlife, Evelyn Community Gardens, Deptford, London, England, UK, August 2011. Model released.

Roland Seitre / Primate Conservation Research and Rescue rangers constructing a rope bridge, so Colobus Monkeys can cross the road safely. Ukunda, Diani Beach, Kenya.

Roland Seitre / Primate Conservation Research and Rescue rangers constructing a rope bridge, so Colobus Monkeys can cross the road safely. Ukunda, Diani Beach, Kenya.

Pete Oxford / Bridge being built across Napo River to connect the town of Coca with Yasuni National Park, Amazon, Ecuador

Pete Oxford / Bridge being built across Napo River to connect the town of Coca with Yasuni National Park, Amazon, Ecuador

Roland Seitre / European Hornets (Vespa crabro) at nest, constructing cells for pupae development. Tours, France, August.

Roland Seitre / European Hornets (Vespa crabro) at nest, constructing new cells for pupae development. Tours, France, August.

Brent Stephenson / Male Australasian Gannet (Morus serrator) presenting seaweed to the female at the nest. Seaweed is used in constructing the nest. Cape Kidnappers, Hawkes Bay, New Zealand, September.

Gary K. Smith / Man constructing traditional wattle willow-weave fence. Norfolk, UK, March.

Konrad Wothe / Wasp (Polistes nimpha) constructing nest, Upper Bavaria, Germany

Pete Oxford / Huaorani Indian house. The houses are made by constructing a frame from cut logs and covering it with palm leaves. Gabaro Community, Yasuni National Park, Ecuador, June 2007.

Tim Laman / Vogelkop Bowerbird (Amblyornis inornata) male adding a new stick to the bower he is constructing. West Papua, Indonesia, Dec 2008

Tim Laman / Male Vogelkop Bowerbird (Amblyornis inornata) at a new bower which he is constructing. West Papua, Indonesia, Dec 2008

Tim Laman / Male Vogelkop Bowerbird (Amblyornis inornata) at a new bower which he is constructing, working on the matt of rootlets around the base of the maypole in the center of the bower. West Papua, Indonesia,...

Bryan and Cherry Alexander / Khanty and Forest Nenet Reindeer / Caribou herders constructing their 'Chum' (tent). Khanty Mansiysk, Western Siberia, Russia, 2000.

Marie Read / House Wren (Troglodytes aedon) nest building, at its nest hole in an Aspen (Populus tremuloides) trunk, Mono Lake Basin, California, USA

Laurent Geslin / Sparrowhawk (Accipiter nisus) female constructing nest from twigs, in urban park, Paris, France, Europe, April

Bryan and Cherry Alexander / Cree hunter constructing framework of traditional winter tent. North Quebec, Canada, 1988.

Sven Zacek / Spider (Segestriidae) web building, sillhouetted against the rising sun, Estonia

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, Early stage in web construction - the 3rd radial is being put in place, UK, Sequence 1/5

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 2/5, the radials are in place, the temporary spirals are being constructed.

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...

Tim Laman / Local guides constructing a photography blind at a Lawes' parotia (Parotia lawesii) court using forest materials, Crater Mountain Wildlife Management Area, Eastern Highlands Province, Papua New Guinea...

George Chan / Mongolians constructing a yurt on their summer pastures at Bayanbulak, Xinjiang Province, North-west China. June 2006, BBC "Wild China" series

Jane Burton / Siamese Fighting Fish (Betta splendens) male constructing bubble nest, digital composite, captive, Surrey, UK

Thomas Marent / Wasp (Polistes nimpha) constructing nest, Switzerland

Thomas Marent / Wasp pair conctructing a nest under a Heliconia (Heliconia sp) leaf, Manu National Park, Peru

Jabruson / Bantu villager constructing house from forest materials, Epulu Ituri NR, Congo

Steven David Miller / Male Great grey bowerbird {Chlamydera nuchalis} tending to the entrance of bower, in garden, Lake Argyle, Western Australia

Neil Bromhall / Common wasp queen nest building (Vespula vulgaris) UK

Nick Garbutt / Thorn Spider {Gasteracantha sp.} constructing web, Sukau, Sabah, Borneo.

Pete Oxford / Yellow Weaver {Ploceus subaureus} constructing nest, Aecibird Sanctuary, South Africa.

Kim Taylor / Honey bee {Apis mellifera} workers constructing a new comb

Jim Brandenburg / Lesser Masked Weaver (Ploceus intermedius) males building nests, South Africa

Jim Brandenburg / Lesser Masked Weaver (Ploceus intermedius) males building nests, South Africa

Jim Brandenburg / Lesser Masked Weaver (Ploceus intermedius) male building nest, South Africa

Jim Brandenburg / Lesser Masked Weaver (Ploceus intermedius) male building nest, South Africa

Konrad Wothe / Broad-billed Hummingbird (Cynanthus latirostris) female building nest, Sonora Desert Museum, Saguaro National Monument, Arizona