Kim Taylor / Green Woodpecker (Picus viridis) male flying through Beech woodland in spring, Surrey, UK. Digital composite

Kim Taylor / Green Woodpecker (Picus viridis) using its tongue to extract a beetle larva from hole in Birch trunk. Digital composite, Surrey, UK

Mike Wilkes / Green Woodpeckers feeding young at nest in tree, UK

WILLIAM OSBORN / Green woodpecker (Picus viridis) at nest hole. UK, England

Mike Wilkes / Green Woodpecker feeding young at nest in tree, England, UK

Mike Wilkes / Green Woodpecker feeding young at nest in tree, England, UK

Hermann Brehm / Grey-headed Woodpecker(Picus canus) male on tree trunk, Germany. January

Hermann Brehm / Great spotted woodpecker (Dendrocopos major) and Grey headed woodpecker (Picus canus) on tree trunk, Germany. December

Hermann Brehm / Green woodpecker (Picus viridis) juvenile, Hungary. June

Oscar Dewhurst / Nubian woodpecker (Campethera nubica) foraging on tree trunk. Ol Kinyei Conservancy, Masai Mara National Reserve, Kenya.

Andy Rouse / Green woodpecker (Picus viridis) feeding on ground. UK. July.

Marie Read / Yellow-bellied Sapsucker (Sphyrapicus varius), male drumming, long exposure, New York, USA, April.