John Cancalosi / Two Pileated woodpecker (Dryocopus pileatus) chicks at nest, Washington DC, USA, June.

Dave Bevan / Female Great spotted woodpecker (Dendrocopos major) trying to break into a nut cached in a tree, Carmarthenshire, Wales, UK, November.

Brian Bevan / Male Great spotted woodpecker (Dendrocopos major) feeding a chick pecking at a branch, Carmarthenshire, Wales, UK, June.

Brian Bevan / Female Great spotted woodpecker (Dendrocopos major) bathing, Carmarthenshire, Wales, UK, December.

Brian Bevan / Pair of Green woodpeckers (Picus viridis) feeding chick at nest hole, Bedfordshire, England, UK, June.

Dave Bevan / Juvenile Great spotted woodpecker (Dendrocopos major) at nest entrance, Carmarthenshire, Wales, UK, June.

David Perpinan / Two Crimson-crested woodpeckers (Campephilus melanoleucus) in tree at sunset, Pantanal, Mato Grosso do Sul, Brazil.

David Perpinan / Green barred woodpecker (Chrysoptilus melanochloros) at the entrance of the nest, Pantanal, Mato Grosso do Sul, Brazil.

Ammonite / Male Pale billed woodpecker (Campephilus guatemalensis) tapping, Santa Rosa National Park, Costa Rica.

John Cancalosi / Juvenile Pileated woodpecker (Dryocopus pileatus) vocalising at nest, Washington DC, USA, June.

John Cancalosi / Pileated woodpecker (Dryocopus pileatus) feeding chick at nest, Washington DC, USA, June.

SCOTLAND: The Big Picture / Great spotted woodpecker (Dendrocopos major) foraging on a Silver birch tree (Betula pendula), Scotland, UK, January.

Brian Bevan / Juvenile Green woodpecker (Picus viridis) bathing, Carmarthenshire, Wales, UK, June.

Dave Bevan / Male Great spotted woodpecker (Dendrocopos major) feeding from a peanut string, Carmarthenshire, Wales, UK, January.

Dave Bevan / Male Great spotted woodpecker (Dendrocopos major) descending down a wooden electricity pole, Carmarthenshire, Wales, UK, June.

Brian Bevan / Male Green woodpecker (Picus viridis) feeding chick at nest hole, Bedfordshire, England, UK, June.

Dave Bevan / Male Great spotted woodpecker (Dendrocopos major) feeding chick at entrance to nest, Carmarthenshire, Wales, UK, June.

David Perpinan / Campo flicker (Colaptes campestris) feeding its chicks, Pantanal, Mato Grosso do Sul, Brazil.

David Perpinan / Two White woodpeckers (Melanerpes candidus) drinking, Pantanal, Mato Grosso do Sul, Brazil.

Ramon Navarro / Female Great spotted woodpecker (Dendrocopos major) hunting insects on tree, Seville, Spain, May.

Dave Bevan / Slow motion clip of a female Great spotted woodpecker (Dendrocopos major) feeding on peanuts from a bird feeder, Carmarthenshire, Wales, UK, September.

Dave Bevan / Male Great spotted woodpecker (Dendrocopos major) entering nest hole and leaving with a faecal sac, Carmarthenshire, Wales, UK, June.