Dave Bevan / Slow motion clip of a Jay (Garrulus glandarius) feeding from a peanut string during a snowstorm, Carmarthenshire, Wales, UK, November.

Juergen Freund / Seeds and flower from large tropical almond, sea almond, beach almond (Terminalia catappa) against black sand, Sulawesi beach, Indonesia

Colin Varndell / Hazel nut (Corylus avellana) cases on forest floor, broken by grey squirrel. Dorset, UK August.

Ernie Janes / Sweet chestnut (Castanea sativa) leaves and fruits in autumn, Norfolk, England, UK, August.

Dave Bevan / Jay (Garrulus glandarius) and Great tit (Parus major) feeding from a peanut string, with a Blue tit (Cyanistes caeruleus) nearby, Carmarthenshire, Wales, UK, February.

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

Dave Bevan / Grey squirrel (Sciurus carolinensis) hanging upside down whilst eating from a string of unshelled peanuts, Carmarthenshire, Wales, UK, November.

Dave Bevan / Grey squirrel (Sciurus carolinensis) hanging upside down whilst eating from a string of unshelled peanuts, Carmarthenshire, Wales, UK, November.

Dave Bevan / Grey squirrel (Sciurus carolinensis) trying to remove a string of peanuts from a bird table, Carmarthenshire, Wales, UK, November.

Dave Bevan / Grey squirrel (Sciurus carolinensis) feeding on unshelled stringed peanuts from a bird table, Carmarthenshire, Wales, UK, November.

Dave Bevan / Blue tits (Cyanistes caeruleus) fighting over unshelled peanuts on a string, Carmarthenshire, Wales, UK, November.

Chris Mattison / Empty nut shells opened by parakeets, Sri Lanka.