Heather Angel / Honey bee (Apis mellifera) forages on pollen in Apple (Malus domestica) flower, collecting pollen in pollen basket. In garden, Surrey, England, UK. May.

Nigel Cattlin / Immature caterpillar of a codling moth (Cydia pomonell) eating its way through a gallery in a ripening apple fruit, Berkshire, July

Alastair MacEwen / Time-lapse of Cherry (Prunus) blossom emerging, Somerset, England, UK, April.

Andy Sands / Bullfinch (Pyrrhula pyrrhula) male perched among apple blossom, Buckinghamshire, England. UK

Rolf Nussbaumer / Corn Bunting {Emberiza / Miliaria calandra}adult singing on apple tree, Lake Neusiedl, Austria, April

Rolf Nussbaumer / Traditional farmhouse + apple tree in blossom, Unteraegeri, Switzerland

Colin Varndell / Apple trees in blossom with Bluebells, UK

Phil Savoie / Tawny mining (Andrena fulva) on apple tree blossom (Malus domestica), Monmouthshire, Wales, UK, April.

Phil Savoie / Ligated furrow bee (Halictus ligatus) on Apple blossom (Malus sp) Ripon, Wisconsin, USA, March.

Heather Angel / Blossom scarab beetle (Epicometis hirta) feeding on Ficaria flower (Ficaria fascicularis). In snow melt area, Turkey. May.

Ernie Janes / 'Lady Henniker' apple tree blossom (Malus domestica) Thornham Hall, Suffolk, England, UK.

Dave Bevan / Male Blackbird (Turdus merula) singing, perched in a flowering Hawthorn tree (Crataegus), Gloucestershire, England, UK, June.

Alan Williams / Apple (Malus domestica) blossom variety 'Arthur W. Barnes' in orchard, Cheshire, UK, May

Alan Williams / Apple (Malus domestica) blossom variety 'Egremont Russet' in orchard, Cheshire, UK, May

Alan Williams / Apple (Malus domestica) blossom variety 'Egremont Russet' in orchard, Cheshire, UK, May

Ernie Janes / Cultivated tulips (Tulipa) with Apple blossom (Malus domestica) in background. April. England, UK.

Gary K. Smith / Clutivated Apple tree blossom (Malus domestica 'Bramley's Seedling')

Gary K. Smith / Cultivated Crab apple tree (Malus-x-robusta 'Red-Sentinel') blossom

Dave Bevan / Male Bullfinch (Pyrrhula pyrrhula) feeding on Blackthorn (Prunus spinosa) blossom, Glamorgan, Wales, UK. March.

Dave Bevan / Female Bullfinch (Pyrrhula pyrrhula) feeding on Blackthorn (Prunus spinosa) blossom, Glamorgan, Wales, UK. March.

Nick Upton / Blackthorn blossom (Prunus spinosa) wide angle pan, Wiltshire, England, UK, April.

Nick Upton / Blackthorn (Prunus spinosa) in blossom, Wiltshire, England, UK, April.

Jean E. Roche / Apple (Malus pumila) blossom in organic orchard, Arles, Camargue, France, April.

Jean E. Roche / Apple (Malus pumila) blossom in organic orchard, Arles, Camargue, France, April.

Ernie Janes / Tabby kitten in spring with apple blossom.

Jean E. Roche / Siebold's crab apple (Malus sieboldii) blossom, outside Paris Natural History Museum, Paris, France, April 2015.

Nick Turner / Garden insect box positioned in an apple tree, Stroud, Gloucestershire, UK. May.

Mike Read / Apple blossom (Malus domestica) in an allotment, Ringwood, Hampshire, UK April

Ernie Janes / Footpath sign against Apple blossom (Malus domestica) and field of Oilseed rape (Brassica napus) in flower, Norfolk, England, UK, March.

Staffan Widstrand / Marsh tit (Poecile palustris) perched in apple blossom, Musteika Village, Lithuania, May.

Staffan Widstrand / Marsh tit (Poecile palustris) perched in apple blossom with prey, Musteika Village, Lithuania, May.

Staffan Widstrand / Marsh tit (Poecile palustris) perched in apple blossom, Musteika Village, Lithuania, May.

Phil Savoie / Hairy-footed flower bee (Anthophora plumipes) female feeding on apple blossom (Malus domestica). Monmouthshire, Wales, UK, April.

Phil Savoie / Hairy-footed flower bee (Anthophora plumipes) female feeding on apple blossom (Malus domestica). Monmouthshire, Wales, UK, April.

David Tipling / Blue Tit (Cyanistes caeruleus) in flowering apple tree, Norfolk, England, UK, May.

Tui De Roy / New Zealand Pigeon (Hemiphaga novaeseelandiae) feeding on apple blossom, endemic, Takaka Hill, Golden Bay, South Ilsand, New Zealand.

David Tipling / Chaffinch (Fringila coelebs) feeding on apple blossom buds, Norfolk, England, UK, May.

Philippe Clement / Apple tree (Malus domestica) blossom in orchard in spring, Hesbaye, Belgium. May 2013.

Philippe Clement / Apple tree (Malus domestica) blossom in orchard in spring, Hesbaye, Belgium. May.

Ernie Janes / Greenfinch (Carduelis chloris) on a Apple blossom (Malus sp), UK , May

Ernie Janes / Great tit (Parus major) on Apple blossom (Malus sp) UK, March

Adrian Davies / Robin (Erithacus rubecula) singing in Apple tree (Malus), May

Marie Read / Baltimore Oriole (Icterus galbula) male foraging in apple blossom in spring, New York, USA, May.

David Woodfall / Crab Apple (Malus sylvestris) in flower on spring evening, Gilfach Nature Reserve, Radnorshire Wildlife Trust, Powys, Wales, UK May

David Woodfall / Crab Apple (Malus sylvestris) in flower in spring, Gilfach Nature Reserve, Radnorshire Wildlife Trust, Powys, Wales, UK

David Woodfall / Redstart (Phoenecurus phoenicurus) male in flowering Crab apple tree, Gilfach Nature Reserve, Radnorshire Wildlife Trust, Powys, Wales, UK May

David Woodfall / Great Tit (Parus major) on branch of flowering Crab Apple (Malus sylvestris) Gilfach Nature Reserve, Radnorshire Wildlife Trust, Powys, Wales, UK May

Markus Varesvuo / Booted Warbler (Hippolais caligata) perched beside apple blossom, Finland, June

Adrian Davies / Apple tree (Malus domestica) blossom, Cox variety, UK, April

Adrian Davies / Apple tree (Malus domestica) blossom, Cox variety, UK, April

Adrian Davies / Apple tree (Malus domestica) blossom, Cox variety, UK, April

Adrian Davies / Apple tree (Malus domestica) blossom, Cox variety, UK, April

Adrian Davies / Apple tree (Malus domestica) blossom, Cox variety, UK, April

Adrian Davies / Apple tree (Malus domestica) blossom, Cox variety, UK, April

Adrian Davies / Apple tree (Malus domestica) blossom, Cox variety, UK, April

Ernie Janes / Yellowhammer (Emberiza citinella) on flowering Apple tree branch, UK, April

Ernie Janes / Goldfinch (Carduelis carduelis) on Apple tree branch in blossom, UK, April

Ernie Janes / Goldfinch (Carduelis carduelis) on Apple tree branch with blossom, UK, April

Philippe Clement / Half-standard Apple Tree (Malus domestica) orchard flowering in spring. Hesbaye, Belgium, April.

Philippe Clement / Half-standard Apple Tree (Malus domestica) orchard flowering in spring. Hesbaye, Belgium, April.

Ernie Janes / Gardener hand-pollinating apple blossom, Norfolk, UK

Gary K. Smith / Apple Blossom (Malus sylvestris) 'Braddicks Nonpareil' variety. Norfolk, England, April.

Gary K. Smith / Crab apple blossom (Malus domestica) 'Red Sentinel'. Norfolk, England, April.

Gary K. Smith / Crab apple blossom (Malus domestica) 'Red Sentinel'. Norfolk, England, April.

Gary K. Smith / Crab apple blossom (Malus domestica) 'Red Sentinel'. Norfolk, England, April.

Ernie Janes / Blue Tit (Parus caeruleus) on apple blossom. UK, April.

Florian Möllers / Meadow orchard with apple trees in blossom, nature reserve NSG Koeppchensee, Berlin, Germany. May 2006

Florian Möllers / Cultivated apple tree (Malus domestica) in flower, Koeppchensee Nature Reserve, Berlin, Germany, May

Florian Möllers / Cultivated apple tree (Malus domestica) in flower, Koeppchensee Nature Reserve, Berlin, Germany, May

Marie Read / Northern Cardinal (Cardinalis cardinalis), male perched amongst apple blossom, New York, USA, May

Marie Read / Eastern / Rufous-sided towhee (Pipilo erythrophthalmus), male singing, perched amongst apple blossom in spring, New York, USA, May

Marie Read / Eastern / Rufous-sided towhee (Pipilo erythrophthalmus), male perched amongst apple blossom in spring, New York, USA, May

Gary K. Smith / Mother Shipton moth (Callistege mi) feeding on Crab apple (Malus baccata) blossom in hedgerow, Norfolk, UK, May

Nick Upton / Common carder bumble bee (Bombus pascuorum) flying towards Crab apple blossom (Malus sylvestris), Wiltshire garden, UK, May.

Marie Read / Baltimore / Northern Oriole (Icterus galbula) male perched on apple blossom, New York, USA

Stephen Dalton / Honey bee {Apis mellifera} flying to apple blossom, UK

Stephen Dalton / Honey bee {Apis mellifera} flying towards Apple blossom, UK

Stephen Dalton / Apple blossom beetle / flower chafer {Tropinota / Epicometis hirta} on allium flower, Cyprus

Stephen Dalton / Apple blossom beetle / flower chafer {Tropinota / Epicometis hirta} on allium flower, Cyprus

Nick Upton / Solitary mining bee (Andrena sp) on Crab apple (Malus sylvestris) flower with pollen coating hind legs, Wiltshire, UK, spring

Nick Upton / Crab apple tree (Malus sylvestris) in full blossom, Wiltshire garden, UK, spring.

Nick Upton / Crab apple tree (Malus sylvestris) in full blossom, Wiltshire garden, UK, spring.

Hanne & Jens Eriksen / Plain tiger {Danaus chrysippus} butterfly on Sodom's Apple blossom {Calotropis procera}, Dhofar, Oman

Hanne & Jens Eriksen / Plain tiger {Danaus chrysippus} butterfly on Sodom's Apple blossom {Calotropis procera}, Dhofar, Oman

Kerstin Hinze / Blossom of Cultivated apple tree (Malus pumila cv. Niedzwetzkyana- Aldenham Purple) created 1925 in Aldenham House, Elstree, England

Andy Sands / Bullfinch (Pyrrhula pyrrhula) male feeding on buds of apple blossom, Buckinghamshire, England. UK

Andy Sands / Bullfinch (Pyrrhula pyrrhula) female perched among apple blossom, Buckinghamshire, England. UK

Andy Sands / Bullfinch (Pyrrhula pyrrhula) male perched among apple blossom, Buckinghamshire, England. UK

Dietmar Nill / Dandelion growing on the trunk of an old blossoming apple tree in orchard Baden-Wuerttemberg, Germany

Christoph Becker / Blossom on Apple tree {Malus sp} Germany

Ingo Bartussek / Apple blossom {Malus domestica} Germany

Bengt Lundberg / Young Tengmalm's owls (Aegolius funereus) on apple blossom, Sweden

Rolf Nussbaumer / Yellow Wagtail {Motacilla flava} male on apple blossom, National Park Lake Neusiedl, Austria, April

Premaphotos / Common tiger hover fly (Helophilus pendulus) on apple blossom, UK

Gary K. Smith / Bramley Apple tree blossom {Malus domestica} with dew on leaves, Norfolk, UK, April