Erlend Haarberg / White Wagtail (Motacilla alba) reflected in water, spring, Pasvik, Norway, May.

John Waters / Large group of Pied wagtails (Motacilla alba) roosting in a Plane tree (Platanus hispanica), Bath, England, UK, January.

Chris Gomersall / 2020VISION / Adult male Pied wagtail (Motacilla alba yarrellii), in spring plumage, feeding on dung flies (Scathophagidae), Hertfordshire, England, UK, May. Did you know? Some of the colloquial names of Pied wagta...

Ross Hoddinott / Pied Wagtail {Motacilla alba yarrellii} in snow, nr Bradworthy, Devon, UK. December 2010

Ross Hoddinott / Pied Wagtail {Motacilla alba} in snow, nr Bradworthy, Devon, UK. December 2010

David Tipling / Pied wagtails (Motacilla alba yarrellii) silhouetted against the moon, roosting in tree in shopping centre. Kent, UK, December

Andrew Parkinson / Pied wagtail (Motacilla alba yarrellii) taking off from snow covered ground. Derbyshire, UK, January (non-ex)

Andrew Parkinson / Pied wagtail (Motacilla alba yarrellii) standing on snow covered ground, with wind blowing snow around, Derbyshire, UK, January (non-ex)

Jose B. Ruiz / White wagtail {Motacilla alba alba} flying with beak wide open showing aggression towards Sparrow, Alicante, Spain

Jose B. Ruiz / White wagtail {Motacilla alba alba} with beak wide open, reflected in water, Alicante, Spain

Jose B. Ruiz / Male White wagtail {Motacilla alba alba} at waters edge with reflection, Spain

Simon Colmer / Pied Wagtails (Motacilla alba yarrellii) roosting in tree in a car park at night, Sussex, UK

John Waters / Pied Wagtails (Motacilla alba) mass roosting at night in tree in Bath city centre, England, UK, January.

John Waters / Pied Wagtails (Motacilla alba) mass roosting at night in tree, Bath city centre, England, UK, January.

John Waters / Pied Wagtails (Motacilla alba) mass roosting at night in tree in Bath city centre, England, UK, January.

Klein & Hubert / White wagtail (Motacilla alba) on stump in spring, France.

Klein & Hubert / White wagtail (Motacilla alba) on stump collecting fur to line nest, France.

John Waters / Large group of Pied wagtails (Motacilla alba) roosting in a Plane tree (Platanus hispanica), Bath, England, UK, January.

John Waters / Large group of Pied wagtails (Motacilla alba) roosting in a Plane tree (Platanus hispanica), Bath, England, UK, January.

John Waters / Large group of Pied wagtails (Motacilla alba) roosting in a Plane tree (Platanus hispanica), Bath, England, UK, January.

John Waters / Large group of Pied wagtails (Motacilla alba) roosting in a Plane tree (Platanus hispanica), Bath, England, UK, January.

John Waters / Large group of Pied wagtails (Motacilla alba) roosting in a Plane tree (Platanus hispanica), Bath, England, UK, January.

John Waters / Large group of Pied wagtails (Motacilla alba) roosting in a Plane tree (Platanus hispanica), Bath, England, UK, January.

John Waters / Large group of Pied wagtails (Motacilla alba) roosting in a Plane tree (Platanus hispanica), Bath, England, UK, January.

Nick Upton / Pied wagtail (Motacilla alba) foraging for aquatic insects on the bank of small stream, Gloucestershire, UK, June.

Nick Upton / Pied wagtail (Motacilla alba) fluffed up to keep warm as it rests on deep snow under a hedge out of the wind in a garden, Wiltshire, UK, January.

David Tipling / Pied wagtail (Motacilla alba) male on sugar beet Salthouse Norfolk, England, UK. November

Loic Poidevin / Pied wagtail (Motacilla alba) in grass. Vendee, Pays-de-la-Loire, France. April.

Matthew Maran / Pied wagtail (Motacilla alba yarellii) taking off, East Devon, England, UK, February.

David Pattyn / White wagtail (Motacilla alba) portrait, Valkenhorst Nature Reserve, The Netherlands. December.

Loic Poidevin / White wagtail (Motacilla alba) perched on a branch, Valencia, Spain, February

Pal Hermansen / White wagtail (Motacilla alba alba) nesting in cupboard in house, Lofoten, Norway, June. Highly commended in the Urban Wildlife Category of the Wildlife Photograher of the Year Awards (WPOY) Competiti...

Dave Bevan / Pied wagtail (Motacilla alba) entering nest site in old tractor with food, leaves with faecal sac, Carmarthenshire, Wales, UK, June.

Dave Bevan / Slow motion clip of a Pied wagtail (Motacilla alba) entering nest site in old tractor with food, before leaving with a faecal sac, Carmarthenshire, Wales, UK, July.

Hermann Brehm / White Wagtail (Motacilla alba), Bayern, Germany. June

Dave Bevan / Pied wagtail (Motacilla alba) feeding chick, removes a faecal sac from nest, Carmarthenshire, Wales, UK. July.

Cyril Ruoso / White wagtail (Motacilla alba) Lanan island, Vega archipelago, Norway June

Cyril Ruoso / White wagtail (Motacilla alba) Hysvær Island, Vega archipelago, Norway June

Dave Bevan / Pair of Pied wagtails (Motacilla alba) bringing food to nest in the eaves of a building, Carmarthenshire, Wales, UK. April.

Dave Bevan / Pair of Pied wagtails (Motacilla alba) bringing food to nest in the eaves of a building, Carmarthenshire, Wales, UK. April.

Cyril Ruoso / White Wagtail (Motacilla alba) on a sand dune, Baie de Somme Nature Reserve, Picardie, France April

Dong Lei / White wagtail (Motacilla alba) walking, Gaoligong Mountain National Nature Reserve, Yunnan Province, China, October.

Jussi Murtosaari / White wagtail (Motacilla alba), male carrying food for young. Jyvaskyla, Finland, June.

Gerrit Vyn / White wagtail (Motacilla alba) Chukotka, Rusia. May.

Dave Bevan / Pied wagtail (Motacilla alba yarellii) at nest with chicks, Carmarthenshire, Wales, UK, August.

Dave Bevan / Pied wagtail (Motacilla alba yarellii) perched slate barn roof with beak full of flies, Carmarthenshire, Wales, UK, July.

Dave Bevan / Pied wagtail (Motacilla alba yarellii) brooding chicks on nest, Carmarthenshire, Wales, UK, July.

Dave Bevan / Pied wagtail (Motacilla alba yarellii) pair with food for chicks on nest in barn windowsill, Carmarthenshire, Wales, UK, July.