Oscar Dewhurst / European nuthatch (Sitta europaea) preening. Durham, UK. January.

Oscar Dewhurst / European nuthatch (Sitta europaea) perched in the snow. Durham, UK. January.

Oscar Dewhurst / Eurasian nuthatch (Sitta europaea) perched on tree trunk. Durham, UK. March

Staffan Widstrand / Wild Wonders of China / Eurasian Nuthatch (Sitta europaea), Alishan National Scenic Area, Taiwan

Tony Wu / Eurasian nuthatch (Sitta europaea amurensis) perched on hand, tame bird habituated to people. Hokkaido, Japan. March.

David Perpinan / Eurasian nuthatch (Sitta europaea) landing on log with sunflower seed in beak, places it on log and attempts to crack it open, Barcelona, Spain, November.

Dave Bevan / Slow motion clip of a Great spotted woodpecker (Dendrocopos major) returning to nest hole, attacked by a Nuthatch (Sitta europaea), Carmarthenshire, Wales, UK, April.

Dave Bevan / European nuthatch (Sitta europaea) entering nestbox to feed nestling before flying out of frame, Carmarthenshire, Wales, UK, May.

Konrad Wothe / Nuthatch (Sitta europaea) climbing, Bavaria, Germany, April.

Erlend Haarberg / Eurasian Nuthatch (Sitta europea), Nordherad, Norway, October.