Terry Whittaker / Red fox (Vulpes vulpes) adult with train in background, Kent, UK. March. Highly commended in the Nature Photographer of the Year Awards 2018. Taken with remote camera.

Bence Mate / Red-legged honeycreeper (Cyanerpes cyaneus) two males on barbed wire. Costa Rica.

Jurgen Freund / Tolga Bat Hospital director Jenny Maclean rescuing, Spectacled flying fox (Pteropus conspicillatus) caught in barbed wire fence. Atherton Tablelands, Queensland, Australia. April 2015. Second Place i...

Charlie Summers / Rocky mountain bighorn (Ovis canadensis) ram jumping a barbed wire fence, Montana, USA,

Niall Benvie,Niall Benvie / Tree Sparrow (Passer montanus) on barbed wire, against white background (field studio). Scotland, January.

Niall Benvie,Niall Benvie / Great Tit (Parus major) on barbed wire (field studio). Scotland, December.

Fabrice Cahez / Roe Deer (Capreolus capreolus) jumping over barbed wire fence in snow. Vosges, France, January.

Ross Hoddinott / Male house sparrow (Passer domesticus) on barbed wire fence, next to starlings (Sturnus vulgaris). Nr Bradworthy, Devon, UK, December

Charlie Summers / Rocky Mountain Bighorn sheep (Ovis canadensis) female jumping barbed wire fence, Montana, USA

Andy Sands / European Cuckoo (Cuculus canorus) female perched on fence post, Isle of Coll, Scotland, UK, June

Gary K. Smith / Stonechat (Saxicola torquatus rubicola) male perched on barbed wire, Norfolk, UK, January

Wild Wonders of Europe / Lilja / Cyprus pied wheatear (Oenanthe cypriaca) perched on barbed wire singing, Northern Cyprus, April 2009

Gerry Ellis / Keel-billed Toucan (Ramphastos sulfuratus) portrait showing barbed tongue, native to Mexico and Central America

David Tipling / Amur falcon (Falco amurensis) male perched on barbed wire, Mahe, Seychelles.

Bernard Castelein / Barn swallow (Hirundo rustica) juvenile perched on barbed wire. Klein Schietveld, Brasschaat, Belgium. August.

Bernard Castelein / Barn Swallow; (Hirundo rustica), juvenile, Klein Schietveld, Brasschaat, Belgium. August.

Roger Powell / Common stonechat (Saxicola torquatus) perched on barbed wire. Druridge Bay, Northumberland, UK

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus), hanging entangled in bared-wire that surrounds a factory which also had fruit trees. Clayton, Victoria, Australia.

Doug Gimesy / Animal carer Bev Brown caring for a recently rescued Grey-headed flying-fox (Pteropus poliocephalus) that had become entangled in barbed wire that surrounded a factory. Black Rock, Victoria, Australia...

Doug Gimesy / Damaged wing of Grey-headed Flying-fox (Pteropus poliocephalus) - the result of being caught in barbed-wire that surrounded a school. This bat had to be euthanised. Albert Park, Victoria, Australia. M...

Doug Gimesy / Wildlife bat rescuers, Dr Paul Smith and Beverly Brown, treat a Grey-headed Flying-fox (Pteropus poliocephalus) in their home, whose wind had been torn after being caught in barbed-wire. Black Rock, V...

Doug Gimesy / Wildlife carer Julie Malherbe prepares bottles for orphan Grey-headed Flying-foxes (Pteropus poliocephalus) under her care. They have been orphaned after their mums were killed by power lines or were...

Doug Gimesy / Wildlife rescuer and head of Fly-by-Night Bat Clinic, Tamsyn Hogarth, attempting to cut down a Grey-headed Flying-fox (Pteropus poliocephalus), that had become entangled in barbed-wire fencing in an o...

Richard Du Toit / Dideric cuckoo (Chrysococcyx caprius) perched on fence, Overberg, Western Cape Province, South Africa.

Richard Du Toit / Forktailed drongo (Dicrurus adsimilis) perched on razor wire, Garden Route National Park, Western Cape Province, South Africa.

Joao Burini / Land surrounding Intervales State Park deforested for pasture, Sao Paulo, Brazil. April 2010.

Roger Powell / Corn bunting (Miliaria calandra) singing from a barbed wire fence. Alentejo, Portugal, March.

Roger Powell / Spanish sparrow (Passer hispaniolensis) male perched on a roadside barbed wire fence. Alentejo, Portugal.

Ashley Cooper / Warning sign about the presence of Argentinian mines on the Falkands, February 2014.

Ashley Cooper / Warning sign about the presence of Argentinian mines on the Falkands, February 2014.

Phil Savoie / Hoar frost on barbed wire, Monmouthshire, Wales, UK. December 2017.

Gabriel Rojo / White-browed blackbird (Sturnella superciliaris) male perched on barbed wire, La Pampa, Argentina

Phil Savoie / Tree swallow (Tachycineta bicolor) perched on barbed wire, Montana, USA, June.

Phil Savoie / Tree swallow (Tachycineta bicolor) perched on barbed wire, Montana, USA, June.

Phil Savoie / Tree swallow (Tachycineta bicolor) perched on barbed wire, Montana, USA, June.

Phil Savoie / Tree swallow (Tachycineta bicolor) perched on barbed wire, Montana, USA, June.

Phil Savoie / Tree swallow (Tachycineta bicolor) perched on barbed wire, Montana, USA, June.

Terry Whittaker / Yellowhammer (Emberiza citrinella) perched on barbed wire fence. Chalk cliffs, Dover, Kent. July

Ann & Steve Toon / Dead moles (Talpa europea) hung up in a line on barbed wire. Durham, UK. May.

Niall Benvie / Meadow pipit (Anthus pratensis) perched on barbed wire, Islay, Scotland

Niall Benvie / RF- Meadow pipit, (Anthus pratensis) on fence post, Islay, Scotland. (This image may be licensed either as rights managed or royalty free.)

Gabriel Rojo / Saffron finch (Sicalis flaveola) on barbed wire, La Pampa, Argentina

Gabriel Rojo / Dead Pampas fox (Lycalopex gymnocercus) Grey fox (Lycalopex culpaeus) and Geffroy's cat (Oncifelis geoffroyi) killed by sheep farmers and hung up to deter others, Patagonia, Argentina

Gabriel Rojo / Dead Pampas fox (Lycalopex gymnocercus) Grey fox (Lycalopex culpaeus) and Geffroy's cat (Oncifelis geoffroyi) killed by sheep farmers and hung up to deter others, Patagonia, Argentina

Gabriel Rojo / Saffron finch 1+Sicalis flaveola+2 on barbed wire, La Pampa, Argentina

Terry Whittaker / Arctic terns (Sterna paradisaea) with house in background, Flatey Island, Breioafjorour, Iceland. July

Andres M. Dominguez / Corn bunting (Emberiza calandra) singing, Prado del rey, Cadiz, Spain, March.

Loic Poidevin / Sand martins (Riparia riparia) group of three on barbed wire, Vendee, France, July