Hermann Brehm / Cuckoo (Cuculus canorus) in flight, Germany, April. May

Phil Savoie / Painted nomad bee (Nomada fucata) male bee with characteristic green eyes, sleeping with jaws locked around grass stem, Monmouthshire, Wales, UK. June

Jack Dykinga / Greater roadrunner (Geococcyx californianus) running to feed brood with Lizard prey in beak. Catalina State Park, Sonoran Desert, Arizona, USA. June.

Andy Rouse / Cuckoo (Cuculus canorus) perched on conifer in habitat. Wales, UK. May

Andy Rouse / Cuckoo (Cuculus canorus) in habitat, Wales, UK, May.

SCOTLAND: The Big Picture / Cuckoo wrasse (Labrus bergylta) and Ballan wrasse (Labrus bergylta) on the wreck of Jayne, Shetland

Jack Dykinga / Greater roadrunner (Geococcyx californianus) with Desert spiny desert lizard (Sceloporus magister) prey, Catalina State Park, Arizona, Sonoran Desert, USA. August.

Hermann Brehm / Cuckoo (Cuculus canorus) male, Germany, April.

Glenn Bartley/ BIA / Chestnut-bellied Cuckoo (Hyetornis pluvialis) calling, Jamaica

David Tipling / Common cuckoo (Cuculus canorus) male in flight, Peak District, England, UK. May.

Rosl Roessner/ BIA / Guira Cuckoo (Guira guira) group huddled together, native to South America

Rolf Nussbaumer / Greater roadrunner (Geococcyx californianus), adult drinking, Rio Grande Valley, South Texas, Texas, USA. June