Ernie Janes / Discarded drinks can in clump of Birds foot Trefoil (Lotus corniculatus) on Holkham dunes, Norfolk

Ross Hoddinott / Marbled White butterfly (Melanargia galathea) resting on bird's-foot-trefoil (Lotus corniculatus), Dunsdon Nature Reserve, Devon, UK. July.

Mike Read / Mountain kidney-vetch (Anthyllis montana) and Bird's-foot trefoil (Lotus sp) in alpine meadow. Plateau de Beurre, Vercors Regional Natural Park, France. June.

Fabrice Cahez / Trefoil (Lotus corniculatus) flowers, Vosges, France, April.

Russell Cooper / Essex Skipper (Thymelicus lineola) feeding from Bird's-foot-trefoil (Lotus corniculatus) Surrey, England, UK. July.

MYN / Dirk Funhoff / Bird's foot trefoil (Lotus corniculatus), Lorsch, Hessen, Germany. June. Meetyourneighbours.net project

Lorraine Bennery / Berger's clouded yellow butterfly (Colias alfacariensis) on Trefoil (Lotus sp.), Hautes-Alpes, France, April.

Nick Upton / Short-haired bumblebee queen (Bombus subterraneus) collected in Sweden being released onto Birdsfoot trefoil flowers (Lotus corniculatus) during a UK reintroduction project run by the Bumblebee Conser...

Nick Upton / Short-haired bumblebee queen (Bombus subterraneus) collected in Sweden nectaring on Birdsfoot trefoil flowers (Lotus corniculatus) with its long tongue after release during a UK reintroduction project...

Nick Upton / Short-haired bumblebee queen (Bombus subterraneus) collected in Sweden necataring on Birdsfoot trefoil flowers (Lotus corniculatus) with its long tongue after release during a UK reintroduction projec...

Nick Upton / Red-tailed bumblebee (Bombus lapidarius) flying to a Birdsfoot trefoil flower (Lotus corniculatus), RSPB Dungeness Nature Reserve, Kent, UK, May.

Nick Upton / Birdsfoot trefoil (Lotus corniculatus) and other wild flowers carpeting waste ground once used as a dump and cleared of scrub to improve habitat for bees and other pollinators for Buglife's B-Lines pr...