Sandra Bartocha / Silver birch (Betula pendula) with Heather (Calluna vulgaris) in full bloom, Reicherskreuzer Heide, Nature Reserve Schlaubetal, Germany, August.

Sandra Bartocha / European white birch / Downy Birch (Betula pubescens) and Common Heather (Calluna vulgaris), Reicherskreuzer Heide, Schlaubetal, Germany, August

Marc Slootmaekers / Hen harrier male (Cirus cyaneus) flying, hunting for mice, Kalmthoutse Heide Nature Reserve, Flanders. Veolia Environnement Wildlife Photographer of the Year 2009: Birds Behaviour category: Highly Com...

Bernard Castelein / Small copper butterfly {Lycaena phlaeas} on flower. Kalmthoutse Heide, Belgium

Bernard Castelein / Meadow grasshopper (Chorthippus parallelus) Kalmthoutse Heide, Belgium

Bernard Castelein / Silver studded blue butterflies {Plebejus argus} Kelmthoutse Heide, Belgium

Bernard Castelein / Silver studded blue butterfly {Plebejus argus} Kalmthoutse Heide, Belgium

David Pattyn / Mallard (Anas platyrhynchos) two males with heads submerged dabbling in fen pond. De Regte Heide Nature reserve, Goirle, The Netherlands, June.

David Pattyn / Mallard (Anas platyrhynchos) two males swimming in the water in fen. De Regte Heide Natuurreservaat Nature reserve, Goirle, The Netherlands, June.

Edwin Giesbers / Landscape of Perchtoldsdorfer Heide Nature Reserve, Perchtoldsdorf, Austria. April 2016.

Philippe Clement / Heather (Calluna vulgaris) in bloom on the Mechelse Heide, heathland in the Hoge Kempen National Park, Limburg, Belgium, August

Sandra Bartocha / Soft focus Silver birch (Betula pendula) trees with understorey of Common heather (Caluna vulgaris). Schlaubetal Nature Park, Reicherskreuzer Heide, Germany