Loic Poidevin / Bluethroat (Luscinia svecica) male on post. Vendee, Pays-de-la-Loire, France. April.

Ernie Janes / Black headed gulls (Larus ridibundus) in flight landing on post. East Anglia, England, UK, December.

Ernie Janes / Black headed gulls (Larus ridibundus) in flight landing on post. East Anglia, England, UK, December.

Loic Poidevin / Mussel farming using pilings or "Bouchots", Aiguillon Bay, Vendee, France, July 2017.

Dave Bevan / Eurasian jay (Garrulus glandarius) retrieving acorns from a cache in a rotting gatepost, Carmarthenshire, Wales, UK, November.

Dave Bevan / Eurasian jay (Garrulus glandarius) retrieving food from a cache in a snow covered gatepost, Carmarthenshire, Wales, UK, November.

Dave Bevan / Jays (Garrulus glandarius) collecting acorns from a rotting gate post, Carmarthenshire, Wales, UK, November.

Dave Bevan / Jay (Garrulus glandarius) landing on a fence post and feeding on cached acorns, Carmarthenshire, Wales, UK, November.

Dave Bevan / Jay (Garrulus glandarius) feeding on acorns cached in an old fence post, Carmarthenshire, Wales, UK, November.

Gary K. Smith / Maintenance barge repairing mooring posts on Grand Canal, Venice, Italy.

Gary K. Smith / Maintenance barge with crane and replacement mooring posts, Venice, Italy.

Nick Turner / Traditional hedge laying, Fosse Cross, Gloucestershire, UK. November 2015.