An extended portion of blackcap song, demonstrating the bird's ability to mimic other species.

An extended portion of blackcap song, demonstrating the bird's ability to mimic other species.

 Mixed bumblebee species,   foraging amongst cotoneaster in a disused suburban parking space.

Mixed bumblebee species, foraging amongst cotoneaster in a disused suburban parking space.

 A Roesel's bush cricket, stridulating amongst roadside vegetation.

A Roesel's bush cricket, stridulating amongst roadside vegetation.

 A great spotted woodpecker, briefly drumming on an exposed beech limb.

A great spotted woodpecker, briefly drumming on an exposed beech limb.

 A song thrush, singing clearly from the very top of a common ash tree on the edge of a Cotswold meadow.

A song thrush, singing clearly from the very top of a common ash tree on the edge of a Cotswold meadow.

 A close-up recording of a common starling nest, situated behind guttering at the edge of a village bungalow roof.

A close-up recording of a common starling nest, situated behind guttering at the edge of a village bungalow roof.

 Black-headed and European herring gulls, recorded on the outskirts of Gdynia’s Skwer Kościuszki along concrete sea defences.

Black-headed and European herring gulls, recorded on the outskirts of Gdynia’s Skwer Kościuszki along concrete sea defences.

 Internal sounds from a partially submerged tree branch, recorded in Northern Ireland’s Sperrin Mountains.

Internal sounds from a partially submerged tree branch, recorded in Northern Ireland’s Sperrin Mountains.

 Internal sounds from estuary debris, trapped amongst rock shore defences along the edge of the River Severn.

Internal sounds from estuary debris, trapped amongst rock shore defences along the edge of the River Severn.