Robin Chittenden / European pochards (Aythya ferina) on water, Welney WWT, Norfolk, England, January

Mark Taylor / Red crested pochard (Netta rufina) drake, digitally enhanced, UK

Mark Taylor / Red crested pochard (Netta rufina) male, UK

Jasper Doest / Common Pochard (Aythya ferina) female preening, Friesland, Netherlands

Peter Lewis / European pochard (Aythya ferina) on water in Titchfield Haven, Hampshire, England.

Peter Lewis / Pochard (Aythya ferina) on water. Titchfield Haven Nature Reserve, Hampshire.