Georgette Douwma / Termites excavating corridor in wood {Isoptera} Bunaken, Sulawesi, Indonesia

Ann & Steve Toon / Gap in boundary fence to allow elephant migration but block rhino movement, Lewa Conservancy, Laikipia, Kenya, September 2012

Petra Wegner / Tricolour Cavalier King Charles Spaniel lying on floor in corridor

Petra Wegner / Tricolour Cavalier King Charles Spaniel lying on carpet in corridor

Roland Seitre / Dipterocarpus (Dipteryx panamensis) nuts, showing carpum and seed; an important food of the Great Green / Buffon's Macaw. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Alajuela, with trees and epiphytes, habitat of the Great Green / Buffon's Macaw. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Tree and epiphytes, habitat of the Buffon's Macaw. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Great Green / Buffon's Macaw (Ara ambiguus) in flight against canopy. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Great Green / Buffon's Macaw (Ara ambiguus) taking flight. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Two Great Green / Buffon's Macaw (Ara ambiguus) playing on branch. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Great Green / Buffon's Macaw (Ara ambiguus) interacting on branch. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Two Great Green / Buffon's Macaw (Ara ambiguus) stretching wings and preening. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Great Green / Buffon's Macaw (Ara ambiguus) feeding in canopy. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Great Green / Buffon's Macaw (Ara ambiguus) feeding in canopy. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Great Green / Buffon's Macaw (Ara ambiguus) feeding in canopy. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Roadsign about macaw protection. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Tree and rainforest in the biological corridor of San Juan La Selva, Costa Rica, 2008.

Bernard Castelein / A train speeding past an Elephant crossing sign Assam, India, February 2011.

Patricio Robles Gil / Matador walking down long corridor to the bullring, Plaza de Toros, Mexico City, Mexico

Patricio Robles Gil / Matador walking down long corridor to the bullring, Plaza de Toros, Mexico City, Mexico

Shattil & Rozinski / Two Plain chachalacas (Ortalis vetula) on tree stump, Lower Rio Grande Valley wildlife corridor, along the South Texas border, USA

Shattil & Rozinski / Sign protesting against the US / Mexico border wall, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January/February 2009

Shattil & Rozinski / Construction of the US / Mexico border wall in Hidalgo County, Texas, along the Lower Rio Grande wildlife corridor, USA ILCP RAVE January/February 2009

Shattil & Rozinski / Large flock of Red winged blackbirds (Agelaius phoeniceus) migrating south for winter, foraging for grain on a recently ploughed field, Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Construction of the border wall between USA and Mexico in a wildlife corridor, Lower Rio Grande Valley, Texas, USA ILCP RAVE January/February 2009

Shattil & Rozinski / Large flock of Red winged blackbirds (Agelaius phoeniceus) migrating south for winter, foraging for grain on a recently ploughed field, Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Housing development along the Lower Rio Grande wildlife corridor, Texas, USA

Shattil & Rozinski / Construction of the US / Mexico border wall along the Lower Rio Grande wildlife corridor, Hidalgo County, Texas, USA ILCP RAVE January/February 2009

Shattil & Rozinski / Common pauraque (Nyctidromus albicollis) sleeping on the ground, Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Sun setting over the rare sabal palms of South Texas, USA. Lower Rio Grande Valley wildlife corridor

Shattil & Rozinski / Wetland area acquired by the Santa Ana National Wildlife Refuge showing the disruption of the US / Mexico border wall construction. Before the wall, this valuable habitat was part of an important widl...

Shattil & Rozinski / Aerial view of the US / Mexico border wall in Hidalgo County showing how wildlife corridors are severed, reduced or eliminated by the wall, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP R...

Shattil & Rozinski / Black-bellied whistling ducks (Dendrocygna autumnalis) in flight, The Nature Conservancy's Southmost Preserve, Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Collared peccary / Javelina (Tayassu / Peccari tajacu) two adults with young, Lower Rio Grande valley wildlife corridor, Hidalgo County, Texas, USA

Shattil & Rozinski / Area of wetland acquired by the Santa Ana National Wildlife Refuge showing the disruption of the US / Mexico border wall construction. Before the wall, this valuable habitat was part of an important w...

Shattil & Rozinski / Aerial view of the US / Mexico border wall in Hidalgo County showing how wildlife corridors are severed, reduced, or eliminated, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January...

Shattil & Rozinski / Black-bellied whistling duck (Dendrocygna autumnalis) flying, Nature Conservancy Southmost Preserve, Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Large flock of Red winged blackbirds (Agelaius phoeniceus) in flight, Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Construction of the US / Mexico border wall along the Lower Rio Grande wildlife corridor, Hidalgo County, Texas, USA ILCP RAVE January/February 2009

Shattil & Rozinski / Aerial view of the US / Mexico border wall in Hidalgo County showing how wildlife corridors are severed, reduced, or eliminated, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January...

Shattil & Rozinski / US / Mexico border wall, Lower Rio Grande Valley wildlife corridor, Hidalgo County, Texas, USA ILCP RAVE January/February 2009

Shattil & Rozinski / Wetlands and wildlife habitat viewed through the US / Mexico border wall now on the no-man's-land side, near the Lower Rio Grande Valley wildlife corridor, Hildalgo County, Texas, USA ILCP RAVE Januar...

Shattil & Rozinski / Lower Rio Grande Valley wildlife corridor, Mexican side of the Rio Grande at sunset viewed from Texas, USA

Shattil & Rozinski / Aerial view of the US / Mexico border wall in Hidalgo County, Texas showing how wildlife corridors are severed, reduced, or eliminated, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE...

Shattil & Rozinski / Great blue heron (Ardea herodias) standing between a reclamation pond and the US / Mexico border wall, Lower Rio Grande Valley wildlife corridor, Hidalgo County, Texas, USA ILCP RAVE January/February...

Shattil & Rozinski / Photographer, Wendy Shattil, photographing through the bars of the US / Mexico border wall in Hildalgo County near the Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January/February...

Shattil & Rozinski / Snowy egret (Egretta thula) standing next to a reclamation pond and the US / Mexico border wall near the Mexican border Lower Rio Grande Valley wildlife corridor, Hidalgo County, Texas, USA ILCP RAVE...

Shattil & Rozinski / US / Mexico Border wall construction in progress in Hidalgo County, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January/February 2009

Shattil & Rozinski / Aerial view of the Mexico / US border wall in Hidalgo County showing how wildlife corridors are severed, reduced, or eliminated, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January...

Shattil & Rozinski / Male Pyrrhuloxia (Pyrrhuloxia sinuatus) perched on a thorny branch, Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Aerial view of the US / Mexico border wall in Hidalgo County showing how wildlife corridors are severed, reduced, or eliminated, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January...

Shattil & Rozinski / Pedestrian bridge over the Rio Grande at Progresso, the US / Mexico border wall is viewed by tourists walking from the US side, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January/...

Shattil & Rozinski / Green jay (Cyanocorax yncas) preparing to fly, Lower Rio Grande Valley wildlife corridor, South Texas, USA

Shattil & Rozinski / Aerial view of the US / Mexico border wall in Hidalgo County showing how wildlife corridors are severed, reduced, or eliminated, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January...

Shattil & Rozinski / Raccoon (Procyon lotor) tracks along the length of the US / Mexico border wall (no mans land between the wall and the Rio Grande) Lower Rio Grande Valley wildlife corridor, Hidalgo County, Texas, USA...

Shattil & Rozinski / Young Collared peccary / Javelina (Tayassu / Peccari tajacu) foraging in the dry brush along the Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Bobcat (Felis rufus) tracks along the US / Mexico border wall on the no-man's-land side of the wall (between the wall and the Rio Grande) Lower Rio Grande Valley wildlife corridor, Hidalgo County, Tex...

Shattil & Rozinski / Aerial view of the US / Mexico border wall in Hidalgo County showing how wildlife corridors are severed, reduced, or eliminated, Lower Rio Grande Valley wildlife corridor, Texas, USA ILCP RAVE January...

Shattil & Rozinski / Young Collared peccary / Javelina (Tayassu / Peccari tajacu) portrait, Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Ocelot (Felis pardalis) researcher, Jody Mays, checks the condition of a male captured earlier that day, having been fitted with a radio collar, before release. Ocelot trapping program, Laguna Atascos...

Shattil & Rozinski / Ocelot (Felis pardalis) being released after having a radio collar put on, Laguna Atascosa National Wildlife Refuge, Texas, USA. The largest known population of wild ocelots in the USA lives on this r...

Pete Oxford / Globe headed / Globular chameleon (Calumma globifer) female sleeping at night. Eastern forest within the Anjozorabo corridor to Ranamofana National Park. MADAGASCAR, endemic

Pete Oxford / Globular / Globe headed chameleon (Calumma globifer) eastern forest within the Anjozorabo corridor to Ranamofana National Park, MADAGASCAR, endemic

Bernard Castelein / Warning sign for animal corridor, Kaziranga NP, Assam, India. 2005

Jose B. Ruiz / Corridor inside Castillio de los fonseca, Coca, Segovia, Spain. Built in 1453

Niall Benvie / Corncrake conservation - corridor beside agricultural land. Coll, Argyll, Scotland

Toby Sinclair / Rhinoceros warning sign on road in Animal Corridor, Kaziranga National Park, India

Toby Sinclair / Elephant warning sign on road in Animal Corridor, Kaziranga National Park, Assam, India

Toby Sinclair / Speed limit warning sign in Animal Corridor, Kaziranga Nationl Park, Assam, India

Angelo Giampiccolo / Precious sculptures line the ultra modern and sleek corridor on the 35-metre Gaia motoryacht model, created by Cantieri Maiora, Italy.