David Perpinan / Various Songbirds (Passerine) in cages, confiscated from illegal wildlife trade, Brazil.

David Perpinan / Blue fronted amazon (Amazona aestiva) chicks, confiscated from illegal wildlife trade, Brazil.

Franco Banfi / Great white shark (Carcharodon carcharias) swimming in front of scuba diving cages, Guadalupe Island, Mexico, Pacific Ocean. September 2011.

Franco Banfi / Scuba diver photographing Great white shark, (Carcharodon carcharias) from cage. Guadalupe Island, Mexico, Pacific Ocean. September 2011.

Franco Banfi / Scuba diver photographing Great white shark, (Carcharodon carcharias) from cage. Guadalupe Island, Mexico, Pacific Ocean. September 2011.

Nick Upton / Julia Coats of the Animal and Plant Health Agency releasing Eurasian beaver (Castor fiber) back into River Otter. Part of escaped population re-released to the wild following veterinary check ups. Tak...

Jabruson / Eastern gorilla (Gorilla beringei beringei) confiscated juvenile recovered by National Park authorities from poachers, awaiting release to the wild in wooden crate, with hand reaching out, Djomba, Vir...

Jabruson / Eastern gorilla (Gorilla beringei beringei) juvenile confiscated from poachers by national park authorities from poachers, awaiting release to the wild in wooden crate, Djomba, Virunga National Park,...

Jabruson / Chimpanzee (Pan troglodytes schweinfurthii) in cage, confiscated from poachers, housed in Epulu, Okapi Wildlife Reserve, Orientale Province, North-East, Democratic Republic of Congo

Franco Banfi / Fish farm net of sea cage with thousands of Gilt-head bream (Sparus aurata) Ponza Island, Italy, Tyrrhenian Sea, Mediterranean

Terry Whittaker / Pete Turner weighs Pine marten (Martes martes). in trap. Part of Pine marten research by the Waterford Institute of Technology, Republic of Ireland. August 2008

Eric Baccega / Scientists of the ONCFS with Common hamsters (Cricetus cricetus) ready for release in a wheat field. Grussenheim, Alsace, France, June 2013 Model released.

Jabruson / Mozambican children with captive passerines including Red-throated Twinspot (Hypargos niveoguttatus). Birds are caught to eat whilst watching fields against crop raiding baboons. Pemba to Montepuez hi...

Juergen Freund / Crate of Spectacled flying fox (Pteropus conspicillatus) babies just arrived by plane from Brisbane after months of care, ready to be returned to the Tolga Bat Hospital for release back to the wild, A...

Petra Wegner / British Longhair Cats / Highlander, Lowlander, Britanica, four kittens in travel cage, 10 weeks

Roland Seitre / Southern bluefin tuna (Thunnus maccoyii) in fish cage of fish farm, Port Lincoln, South Australia, Critically Endangered species. Wild caught fish are reared in large fish cages for maximum growth bef...

Florian Möllers / African Lions (Panthera leo) in a bare cage in Beijing Zoo, China, November.

Juergen Freund / Jewelmer Pearlfarm, cleaned Pearl oysters (Pinctada maxima) in hanging cages, being relocated to the open sea, Palawan, Philippines, May 2009

Eric Baccega / Giant panda (Ailuropoda melanoleuca) captive at Wolong Nature Reserve, China

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction from Beauval zoo, France through Gorilla Protection Project. Unloading cage containing female Gorilla from helicopter, near habituation...

Eric Baccega / Beauval zoo staff checking and comforting Western lowland gorilla (Gorilla gorilla gorilla) female in transit. To be reintroduced through Gabon Gorilla Protection Project to Bateke Plateau National Pa...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Loading crate with female from Beauval Zoo onto aircraft. Librevill...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Transporting crate with female from Beauval Zoo onto second aircraf...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Zookeeper from Beauval Zoo checking and comforting female in cage a...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Unloading of crates with two females from Beauval Zoo at Leon-Mba I...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Keepers from Beauval Zoo comforting two females in cages prior to t...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Beauval Zoo keeper feeding female Gorilla through cage prior to tra...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Beauval Zoo keeper feeding female Gorilla through cage prior to tra...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Keeper observing female Gorilla through cage prior to travel to air...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park, Gabon through Gorilla Protection Project. Man loading cage with female Gorilla onto van, evening prior...

Eric Baccega / Keeper arranging bedding in crate for journey of Western lowland gorilla (Gorilla gorilla gorilla) to Bateke Plateau National Park, Gabon. Reintroduction through Gorilla Protection Project. Beauval Zo...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) female aged 12 years walking out of cage onto habituation island. Reintroduction from Beauval Zoo through Gorilla Protection Project. Bateke Plateau N...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) female aged 12 years leaving cage in release on habituation island. Reintroduction from Beauval Zoo through Gorilla Protection Project. Bateke Plateau...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) female aged 9 years exploring habituation island following release from cage. Reintroduction from Beauval Zoo through Gorilla Protection Project. Bate...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) female aged 9 years leaving cage during release onto habituation island. Reintroduction from Beauval Zoo through Gorilla Protection Project. Bateke Pl...

Eric Baccega / Transfer of Western lowland gorilla (Gorilla gorilla gorilla) cage to habituation island. Reintroduction from Beauval Zoo through Gorilla Protection Project. Bateke Plateau National Park, Gabon. 2019.

Eric Baccega / Loading Western lowland gorilla (Gorilla gorilla gorilla) cage onto boat for transfer over Mpassa river to habituation island. Reintroduction from Beauval Zoo through Gorilla Protection Project. Batek...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) female aged 12 years in cage awaiting release onto habituation island, portrait. Reintroduction from Beauval Zoo through Gorilla Protection Project. B...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Keeper giving female Gorilla drink through cage during transfer fro...

Eric Baccega / Transfer of Western lowland gorilla (Gorilla gorilla gorilla) cage from helicopter to boat for onward travel to habituation island. Reintroduction from Beauval Zoo through Gorilla Protection Project....

Eric Baccega / Transfer of Western lowland gorilla (Gorilla gorilla gorilla) cage from helicopter to boat for onward travel to habituation island. Reintroduction from Beauval Zoo through Gorilla Protection Project....

Karine Aigner / Argentine black and white tegu (Salvator merianae) caught in a trap set by the University of Florida, Florida, USA. Tegus are an invasive species in Florida. August 2018.

Karine Aigner / Argentine black and white tegu (Salvator merianae) caught in a trap set by the University of Florida, Florida, USA. Tegus are an invasive species in Florida. August 2018.

Karine Aigner / Argentine black and white tegu (Salvator merianae) caught in a trap set by the University of Florida, Florida, USA. Tegus are an invasive species in Florida. August 2018.

Karine Aigner / Graduate student and biological technician Emily Gati of the University of Florida, holding a trap containing an invasive Argentine black and white tegu (Salvator merianae). The tegu is an adult male...

Karine Aigner / Argentine black and white tegu (Salvator merianae) juvenile, caught in a trap set by the University of Florida. Florida, USA. Tegus are an invasive species in Florida. August 2018.

Karine Aigner / Graduate student Jenna Cole, University of Florida, holds an invasive Argentine black and white tegu (Salvator merianae) that has been trapped and will be euthanased, Florida, USA. August 2018.

Karine Aigner / Graduate student Sarah Cooke of the University of Florida holding a trap containing an invasive Argentine black and white tegu (Salvator merianae) that will be euthanased. Florida, USA. August 2018.

Karine Aigner / Argentine black and white tegu (Salvator merianae) caught in a trap set by the University of Florida, Florida, USA. Tegus are an invasive species in Florida. August 2018.

Nick Upton / Den box and feeding table in a temporary soft release enclosure for a Pine marten (Martes martes) provided by the Forest of Dean and River Wye Pine Marten Project, the Forest of Dean, Gloucestershire,...

Nick Upton / Cat McNicol, Project manager of the Forest of Dean and River Wye Pine Marten project, setting a trailcam to record a Pine marten (Martes martes) leaving a temporary soft release enclosure, the Forest...

Nick Upton / Cat McNicol, Project manager of the Forest of Dean and River Wye Pine Marten project, setting a trailcam to record a Pine marten (Martes martes) leaving a temporary soft release enclosure, the Forest...

Nick Upton / Cat McNicol, Project manager of the Forest of Dean and River Wye Pine Marten Project, propping open the door of a temporary soft release enclosure to allow a Pine marten (Martes martes) to leave when...

Nick Upton / Radio-collared Male Pine Marten (Martes martes) emerging from a temporary soft release cage after dark during the Forest of Dean and River Wye Pine Marten Project, the Forest of Dean, Gloucestershire,...

Nick Upton / Radio-collared Male Pine Marten (Martes martes) emerging from a temporary soft release cage after dark during the Forest of Dean and River Wye Pine Marten Project, the Forest of Dean, Gloucestershire,...

Nick Upton / Radio-collared Male Pine Marten (Martes martes) emerging from a temporary soft release cage after dark during the Forest of Dean and River Wye Pine Marten Project, the Forest of Dean, Gloucestershire,...

Nick Upton / Josie Bridges providing a variety of food for a Pine marten (Martes martes) in its temporary soft release enclosure for the Forest of Dean and River Wye Pine Marten Project, the Forest of Dean, Glouce...

Nick Upton / Josie Bridges propping open the door of a temporary soft release enclosure to allow a Pine marten (Martes martes) to leave when it chooses to for the Forest of Dean and River Wye Pine Marten project,...

Suzi Eszterhas / North American beaver (Castor canadensis) in cage following rescue from a vineyard. Sonoma County Wildlife Rescue, Petaluma, California. September 2015. Captive.

Nick Upton / Rehabilitated Brown big-eared bats (Plecotus auritus) flying in a flight cage, used to check they are able to hunt before they are released, North Devon Bat Care, near Barnstaple, England, UK, June. P...

Philippe Clement / Ferry boat Linga sailing past sea cages / sea pens / fish cages from salmon farm in Laxo Voe, Vidlin on the Mainland, Shetland Islands, Scotland, UK, May 2018

Eric Baccega / Scientists from the ONCFS (National Office for Hunting and Wildlife) releasing Black-bellied hamsters (Cricetus cricetus) in a wheat field. Geispolsheim, Alsace, France, June 2018.

Eric Baccega / Scientist from the ONCFS (National Office for Hunting and Wildlife) releasing Black-bellied hamsters (Cricetus cricetus) in a wheat field. Geispolsheim, Alsace, France, June 2018.

Eric Baccega / Scientists from the French Wildlife Department (ONCFS) with cages of Common hamsters (Cricetus cricetus) in a wheat field for release, Geispolsheim, Alsace, France, June 2018

Eric Baccega / Common Hamsters (Cricetus cricetus) in cages ready for release in a wheat field. Geispolsheim, Alsace, France, June 2018

David Fleetham / Divers in cages photographing Great white shark (Carcharodon carcharias). Guadalupe Island, Mexico.

David Perpinan / Red breasted toucan (Ramphastos dicolorus) in cage, confiscated from illegal wildlife trade, Brazil.

David Perpinan / Various Songbirds (Passerine) in cages, confiscated from illegal wildlife trade, Brazil.

David Perpinan / Panning shot of captive Blue fronted amazons (Amazona aestiva) in cages, confiscated from illegal wildlife trade, Brazil.

David Perpinan / Common marmoset (Callithrix jacchus) in a cage in a rehabilitation centre, confiscated from illegal wildlife trade, Brazil.

David Perpinan / Blue fronted amazon (Amazona aestiva) chicks in a rehabilitation centre, confiscated from illegal wildlife trade, Brazil.

David Perpinan / Unreleaseable Blue fronted amazon (Amazona aestiva) in cage, confiscated from illegal wildlife trade, Brazil.

David Perpinan / Unreleaseable Blue fronted amazon (Amazona aestiva) in cage, showing signs of feather picking, confiscated from illegal wildlife trade, Brazil.

David Perpinan / Close-up of an unreleaseable Blue fronted amazon (Amazona aestiva) in cage, confiscated from illegal wildlife trade, Brazil.

David Perpinan / Cages containing Blue fronted amazons (Amazona aestiva), confiscated from illegal wildlife trade, Brazil.

David Fleetham / Bound chickens (Gallus gallus domesticus) for sale in a large open Indian market shortly after dawn in the town of Otavalo, Ecuador.

David Fleetham / Caged Chickens (Gallus gallus domesticus) for sale in large open Indian market in the town of Otavalo, Ecuador.

David Fleetham / Great white shark (Carcharodon carcharias) snatching surface bait behind "Solmar V", anchored off Guadalupe Island, Mexico.

David Fleetham / Person pointing at a Great white shark (Carcharodon carcharias) dashing for bait off the back of the "Solmar V". Guadalupe Island, Mexico, August 2007.

David Fleetham / Great White Shark (Carcharodon carcharias), investigating a cage off Guadalupe Island, Mexico. November 2003.

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, with Red squirrel (Sciurus vulgaris) caught in cage trap as part of reintroduction to the north west Highlands, Moray, Scotland, UK.

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, with Red squirrel (Sciurus vulgaris) caught in cage trap as part of reintroduction to the north west Highlands, Moray, Scotland, UK.

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, carrying out health checks on Red squirrels (Sciurus vulgaris) trapped as part of reintroduction to the north west Highlands, Moray, Scotland, UK...

SCOTLAND: The Big Picture / Sign on trap for Red squirrel(Sciurus vulgaris) trapped as part of reintroduction to the north west Highlands, Moray, Scotland, UK.

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, carrying out health checks on Red squirrels (Sciurus vulgaris) trapped as part of reintroduction to the north west Highlands, Moray, Scotland, UK...

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, carrying out health checks on Red squirrels (Sciurus vulgaris) trapped as part of reintroduction to the north west Highlands, Moray, Scotland, UK...

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, carrying out health checks on Red squirrels (Sciurus vulgaris) trapped as part of reintroduction to the north west Highlands, Moray, Scotland, UK...

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, carrying out health checks on Red squirrels (Sciurus vulgaris) trapped as part of reintroduction to the north west Highlands, Moray, Scotland, UK...

Peter Cairns / Becky Priestley, Wildlife Officer with Trees for Life, with Red squirrel (Sciurus vulgaris) caught in cage trap as part of reintroduction to the north west Highlands, Moray, Scotland, UK. Winner of th...

Peter Cairns / Becky Priestley, Wildlife Officer with Trees for Life, preparing cage trap to catch Red squirrels (Sciurus vulgaris) as part of reintroduction to the north west Highlands, Moray, Scotland, UK. Winner...

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, with Red squirrel (Sciurus vulgaris) caught in cage trap as part of reintroduction to the north west Highlands, Moray, Scotland, UK.

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, with Red squirrel (Sciurus vulgaris) caught in cage trap as part of reintroduction to the north west Highlands, Moray, Scotland, UK.

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, preparing cage trap to catch Red squirrels (Sciurus vulgaris) as part of reintroduction to the north west Highlands, Moray, Scotland, UK.

SCOTLAND: The Big Picture / Becky Priestley, Wildlife Officer with Trees for Life, preparing cage trap to catch Red squirrels (Sciurus vulgaris) as part of reintroduction to the north west Highlands, Moray, Scotland, UK.

Nick Upton / Pine Marten (Martes martes) in a cage in an animal transport van at a motorway service station en route from Scotland to Wales for a reintroduction project run by the Vincent Wildlife Trust, Scotland,...

Dave Bevan / Little ringed plover (Charadrius dubius) incubating eggs, nest protected by a wire cage, Worcestershire, England, UK. July.