Roland Seitre / Crown of thorns (Euphorbia milii) in flower, Reunion.

Ingo Arndt / Turkey Vulture (Cathartes aura) sunning on fence post San Simeon, California

Jason Smalley / Balls of deer hair caught on barbed wire fence where they jump over, Lancashire, UK

Jason Smalley / Spiderwebs on wire fencing, UK

Bengt Lundberg / Long eared owl {Asio otus} killed on barbed wire fence, Cabaneros, Spain

Steven David Miller / Male Red Flying-fox (Pteropus scapulatus) caught on barbed wire fence, Mary River NP, Northern Territory, Australia

Nick Garbutt / The Taj Mahal viewed through barbed wire fence, from the opposite bank of the Yamuna River. Agra, India.

Artur Tabor / Common Buzzard {Buteo Buteo} perched on fence post, Nadbuzanski NP, Poland

Larry Michael / Northern oriole (Icterus galbula) female perched in wire fence, Wisconsin, USA

Andy Sands / European moles {Talpa euroaea} caught by mole catcher, hanging dead on barbed wire fence, Upper Teesdale, County Durham, UK.

Dietmar Nill / Dead barn owl caught on barbed wire fence (Tyto alba) Germany

Andy Sands / Snipe {Gallinago gallinago} perching on fence post with barbed wire, North Uist, Outer Hebrides, Scotland.

Steve Knell / Twite {Acanthis flavirostris} perched on wire fence, UK.

Paul Hobson / Adult spotted flycatcher {Muscicapa striata} perched on fence post with rusty wire, Peak District, UK.

Mark Raycroft / Standard Wire-haired Dachshund (Canis familiaris) portrait of an adult with its front paws up on a fence

Niall Benvie / Male Kestrel perched on fence post {Falco tinnunculus} Scotland

Niall Benvie / Male Kestrel perched on fence post {Falco tinnunculus} Scotland

Flip de Nooyer / Barn Swallow (Hirundo rustica) adult flying feeding chicks perched on barbed wire, Europe

Yva Momatiuk & John Eastcott / Scissor-tailed Flycatcher (Tyrannus forficatus) juvenile perched on fence wire, southern Texas

Flip de Nooyer / Barn Swallow (Hirundo rustica) adult flying feeding three chicks perched on barbed wire, Europe

Flip de Nooyer / Western Marsh-Harrier (Circus aeruginosus) caught in barbed wire, Europe

Tony Evans / Cobwebs on fence, UK

Andrew Parkinson / Sociable weaver nest on telegraph pole {Philetairus socius} South Africa

Gabriel Rojo / Grassland yellow finches on wire fence {Sicalis luteola} Argentina

Gabriel Rojo / Dead Guanaco caught in wire fencing {Lama guanicoe} Valdez, Patagonia, Argentina

Duncan Mcewan / Trapped European moles hanging on wire fence {Talpa europaea}, Ayrshire, Scotland, UK

Barry Mansell / Sherman's fox squirrel (Sciurus niger shermani) species of special concern, South of Kissimmee Lake, Central Florida, USA

Martin Willis / Red-backed Fairywren (Malurus melanocephalus) female with insect, Atherton Tableland, Queensland, Australia

Martin Willis / Black-throated Finch (Poephila cincta), white-rumped race, sitting on barb-wire fence, Townsville, Queensland, Australia

Richard Du Toit / Malachite Kingfisher (Alcedo cristata) greeting landing individual, Marievale Bird Sanctuary, Gauteng, South Africa

Mike Read / Crested lark {Galerida cristata} perched on fence, Alentejo, Portugal, February

Albert Lleal / Contaminated standing water that causes disease in slums of Dhaka, Bangladesh

Kim Taylor / Winter moth (Operophtera brumata) pair mating on wire fence, Surrey, England

Dr. Axel Gebauer / Tibet Sand martin (Riparia diluta tibetana) on wire fence. Qinghai Nanshan, 3,500m above sea level, Koko Nor lake, Tso Ngonbo, Qinghai Hu, Qinghai Province, Tibet, Amdo, China

Richard Du Toit / Insect impaled on barbed wire, Mpumalanga, Highveld, South Africa

Richard Du Toit / Barn Owl (Tyto alba) dead, entangled in barbed wire fence, Kalahari, South Africa

Richard Du Toit / African elephant breaking through wire fence {Loxodonta africana} South Africa

WILLIAM OSBORN / Dead Jays hanging on barbed wire fence {Garrulus glandarius} UK

Mike Read / Barn owl {Tyto alba} dead bird on barbed wire fence UK