Dave Bevan / Welsh mountain sheep cleaning afterbirth from a lamb before a second lamb is born, Carmarthenshire, Wales, UK, March.

Will Watson / Black Welsh Mountain sheep portrait, Herefordshire, UK

Nick Upton / Common starlings (Sturnus vulgaris) foraging for insects around grazing Welsh mountain sheep (Ovis aries) on pastureland, Somerset Levels, UK, January.

Dave Bevan / Welsh mountain sheep (Ovis aries) grazing amongst Bluebells (Hyacinthoides non-scripta), Carmarthenshire, Wales, UK, May.

Dave Bevan / Welsh mountain sheep cleaning afterbirth from twin lambs, Carmarthenshire, Wales, UK, March.

Dave Bevan / Two Welsh mountain sheep lambs attempting to stand, with mother nearby cleaning them, Carmarthenshire, Wales, UK, March.

Dave Bevan / Welsh Mountain sheep cleaning lamb, Carmarthenshire, Wales, UK, March.

Dave Bevan / Welsh mountain sheep giving birth to a lamb, Carmarthenshire, Wales, UK, March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) looking at dead lamb, Carmarthenshire, Wales, UK. March.

Dave Bevan / Welsh mountain sheep (Ovis aries) lamb standing 20 minutes after birth, searching for udder, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) feeding after birth, with lamb resting nearby, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) eating birth membrane whilst lamb struggles to stand up, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) eating birth membrane whilst lamb shakes fluid from nose and ears, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) giving birth and removing membrane from lambs face to allow it to breathe, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) eating birth membrane, removing it from lamb, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) showing pre-birth movement, Carmarthenshire, Wales, UK, March.

Dave Bevan / Welsh mountain sheep with lambs grazing in woodland, RSPB Gwenffrwd-Dinas Reserve, Carmarthenshire, Wales, UK. May.

Will Watson / Running flock of Welsh Mule ewes, crossbred from Bluefaced Leicester and Welsh Mountain sheep, Herefordshire, England, UK, August.

Will Watson / Flock of Welsh Mule ewes, crossbred sheep from Bluefaced Leicester and Welsh mountain sheep, in a cider orchard, Herefordshire, England, UK, August 2013.

Will Watson / Flock of Welsh Mule ewes, crossbred from Bluefaced Leicester and Welsh Mountain sheep, Herefordshire, England, UK, August.

John Cancalosi / Welsh Mountain Sheep (Ovis aries) portrait. Wales, January.

David Woodfall / Mixed Welsh Mountain and Jacob sheep (Ovis aries) in meadow. Gilfach Farm SSSI, Radnorshire Wildlife Trust, Wales, UK, November.

David Woodfall / Mixed Welsh Mountain and Jacob sheep (Ovis aries) in meadow in farm managed as a nature reserve. Gilfach farm SSSI Radnorshire Wildlife Trust, Wales, November.

David Woodfall / Mixed Welsh Mountain and Jacob Sheep (Ovis aries) in meadow in farm managed as a nature reserve. Gilfach farm SSSI Radnorshire Wildlife Trust, Wales, November.

David Woodfall / Mixed Welsh Mountain and Jacob sheep (Ovis aries) in meadow. Gilfach Farm SSSI, Radnorshire Wildlife Trust, Wales, UK, November.

David Woodfall / Welsh Mountain and cross breed sheep (Ovis aries) in upland pasture in snow, Gwynedd, North Wales, February 2009

David Woodfall / Welsh Mountain Sheep (Ovis aries) in snow and wind, Gwynedd, North Wales, February 2009

David Woodfall / Welsh Mountain and cross breed sheep in upland pasture in snow, Gwynedd, North Wales, UK, February 2009

Colin Seddon / Welsh Mountain ewe {Ovis aries} standing on the road in Welsh mountains, UK.

Phil Savoie / Black Welsh mountain sheep lamb calling. Wales UK, March

Phil Savoie / Black Welsh mountain sheep lamb calling. Wales UK, March

Phil Savoie / Black Welsh mountain sheep lamb calling. Wales UK, March

Phil Savoie / Black Welsh badger-faced mountain sheep. Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh badger-faced mountain sheep, lambs, Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh Badger-faced Mountain Sheep. Monmouthshire, Wales, UK, March

Phil Savoie / Welsh Badger-faced Mountain Sheep, long exposure, Monmouthshire, Wales, UK, July

Phil Savoie / Black Welsh badger-faced mountain sheep, lambs resting, Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh badger-faced mountain sheep, lamb resting, Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh badger-faced mountain sheep, ram, Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh badger-faced mountain sheep, lamb, Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh badger-faced mountain sheep, female with lambs, Monmouthshire, Wales, UK, March

Phil Savoie / Young farmer holding Black welsh badger-faced mountain sheep lamb. Monmouthshire, Wales, UK, March

Phil Savoie / Young farmer holding Black welsh badger-faced mountain sheep lamb. Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh badger-faced mountain sheep, ewe and lamb, Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh Badger-faced Mountain Sheep, lamb running, Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh Badger-faced Mountain Sheep, ewe and lambs, Monmouthshire, Wales, UK, March

Phil Savoie / Black Welsh Badger-faced mountain sheep, ewe and lambs Monmouthshire, Wales, UK, March

Dave Bevan / Welsh mountain sheep grazing amongst Bluebells (Hyacinthoides nonscripta), Carmarthenshire, Wales, UK, April.