Will Watson / Cranefly (Ctenophora pectincornis) on Hawthorn (Crataegus monogyna), ancient semi-natural woodland, Herefordshire Plateau, England.

Ernie Janes / Ivy (Hedra helix) in flower growing around Hawthorn (Crataegus monogyna) bush in hedgerow. Norfolk, England, UK. September.

Ernie Janes / Blackthorn (Prunus spinosa) sloes and Hawthorn berries (Crataegus monogyna) Norfolk, England, UK, August.

Ernie Janes / Blackthorn (Prunus spinosa) sloes and Hawthorn berries (Crataegus monogyna) Norfolk, England, UK, August.

Robert Thompson / Puss moth (Cerura vinula) camouflaged on small Hawthorn tree (Crataegus monogyna) Burren National Park, County Clare, Ireland, April.

Gary K. Smith / Common hawthorn (Crataegus laevigata) blossom on white background.

Mike Read / Common linnet (Carduelis cannabina) pair perched in Hawthorn (Crataegus monogyna) Broughton Down Hampshire and Isle of Wight Wildlife Trust Reserve, Broughton, Hampshire. England, UK August.

Dave Bevan / Pair of Wood pigeons (Columba palumbus) perched in a Hawthorn tree (Crataegus monogyna), exchanging food, Gloucestershire, England, UK, June.

John Waters / Tracking timelapse of Common hawthorn trees (Crataegus monogyna), Dartmoor National Park, Devon, England, UK, September 2012.

John Waters / Hawthorn tree (Crataegus monogyna) shaped by the prevailing wind, growing in sheep pasture near Oxwich Point, Gower peninsula, Wales, UK, October.

Nick Upton / Spotted flycatcher (Muscicapa striata) perched in a Hawthorn tree (Crataegus sp.) with a Marmalade hoverfly (Episyrphus balteatus) and another insect it has caught in its beak, Cornwall, UK, June.

Sylvain Cordier / Fat dormouse (Myoxus glis) eating fruit of English hawthorn (Crataegus laevigata), Alsace, France