David Tipling / Fern growing among Bluebells (Hyacinthoides non-scripta) Foxley Wood, Norfolk, UK, April.

David Tipling / Red campion (Silene dioica) flowering in woodland amongst Bluebells and Greater stitchwort. Thursford Wood, North Norfolk, UK, May.

Sandra Bartocha / Silver birch (Betula pendula) and Scots pine (Pinus sylvestris) trunks in snow, Muritz-National Park, Germany, January.

Laurent Geslin / Domestic cat (Felis catus) playing with prey, a dead Common treecreeper (Certhia familiaris) UK

Alex Hyde / Aposematism describes the use of bright colouration and bold patterns to advertise that an organism is unpalatable or dangerous. All three insects are foul-tasting or toxic if eaten: Wood Tiger moth...

Alan Watson / Heart-shaped patch of lungwort (Lobaria virens) on the moss-covered trunk of Oak tree (Quercus petraea) and Holly trees (Ilex aquifolium) temperate forest, Tomies Wood, Killarney National Park, County...

Alan Watson / Heart-shaped patch of lungwort (Lobaria virens) on the moss-covered trunk of Oak tree (Quercus petraea) and Holly trees (Ilex aquifolium) temperate forest, Tomies Wood, Killarney National Park, County...

Stephen Dalton / Collection of bird feeders in garden, with Greenfinches (Carduelis chloris) and Great tits (Parus major) UK

Wild Wonders of Europe / Giesbers / Wood cranesbill (Geranium sylvaticum) and Buttercups (Ranunculus breyninus) flowering with the Grauspitz (2,599m) in the distance, Liechtenstein, June 2009

Wild Wonders of Europe / Biancarelli / Wild garlic (Allium ursinum) and Bluebell (Hyacinthoides non-scripta / Endymion non-scriptum) carpet in Beech wood, Hallerbos, Belgium, April 2009

Wild Wonders of Europe / Biancarelli / Wild garlic (Allium ursinum) and Bluebell (Hyacinthoides non-scripta / Endymion non-scriptum) carpet in Beech wood, Hallerbos, Belgium, April 2009

Wild Wonders of Europe / Biancarelli / Wild garlic (Allium ursinum) and Bluebell (Hyacinthoides non-scripta / Endymion non-scriptum) in flower, Beech wood, Hallerbos Belgium, April 2009