Marie Read / Snowy Owl (Nyctea scandiaca) female perched, Amherst Island, Ontario, Canada, January.

Marie Read / Loggerhead shrike (Lanius ludovicianus) on an ice-covered fence after an ice storm, Anahuac National Wildlife Refuge, Texas, USA. January.

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.

Juergen 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,

Shattil & Rozinski,Shattil & Rozinski / Black bear (Ursus americanus) cub climbing a fence, Minnesota, USA, May.

Fabrice Cahez / Eurasian Sparrowhawk (Accipiter nisus) rear view perching on fence post with tail feathers spread. Vosges, France, January.

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

Nick Garbutt / Polar Bear Cub (7-8 months) (Ursus maritimus) investigating photographer through wire fence. Lodge on the shores of Hudson Bay, Canada (Sept).