Andy Sands / Chiffchaff (Phylloscopus collybita) singing, perched on branch of Cherry (Prunus sp.) blossom, Hertfordshire, England, UK, March

Andy Sands / Goldcrest (Regulus regulus) male in full song, Buckinghamshire, England, UK.

Andy Sands / Chiffchaff (Phylloscopus collybita) in full song among Blackthorn (Prunus spinosa) blossom, Hertfordshire, England, UK.

Andy Sands / Barn swallow (Hirundo rustica) in full song on dead Elm twig, Hertfordshire, England, UK.

Andy Sands / Robin (Erithacus rubecula) sitting on a garden fork handle singing, Hertfordshire, England, UK

Pete Oxford / Hongoryn els or singing sands dunes up to 800m, Gobi desert, Mongolia

Ashley Cooper / Plastic rubbish washed up at the singing sands on the west coast of the Isle of Eigg, Scotland, UK. May 2012

Ashley Cooper / Fishing net washed up at the singing sands on the west coast of the Isle of Eigg, Scotland, UK. May 2012

Andy Sands / Willow Warbler (Phylloscopus trochilus) singing from dead tree stump, Bedfordshire, England, UK, April

Andy Sands / Dartford warbler (Sylvia undata) singing from Gorse bush, Hampshire, England, UK, May

SCOTLAND: The Big Picture / View towards Isle of Rum from Singing Sands Beach, Isle of Eigg, Inner Hebrides, Scotland, UK, April 2014.

SCOTLAND: The Big Picture / View towards Isle of Rum from Singing Sands Beach, Isle of Eigg, Inner Hebrides, Scotland, UK, April 2014.