Andy Rouse / Black headed bunting, (Emberiza melanocephala), catching flies on sunflower crop, Bulgaria, June.

Cyril Ruoso / Common Sunflower (Helianthus annuus) field, Bourgogne, France

Cyril Ruoso / Common Sunflower (Helianthus annuus) field, Bourgogne, France

Jack Dykinga / Sunset Crater National Monument with dawn light on the San Francisco Peaks over fields of flowering Prairie sunflowers (Helianthus petiolaris) Arizona

Paul Harris / 2020VISION / People working and looking around in Evelyn Community Gardens, with Sunflowers (Helianthus annus) Deptford, London, England, UK, August 2011.

LYNN M. STONE / Mixed-breed piglet in wooden box with sunflowers, Maple Park, Illinois, USA

David Noton / A field of sunflowers near Castelnaudary at sunrise. Aude, Languedoc-Roussillon, France, July 2010.

Philippe Clement / Sunflowers (Helianthus annuus) inside incandescent lamp / bulb against white background Digital composite

Jack Dykinga / Prairie sunflowers (Helianthus petiolaris) catching the sunlight on a sand dune in deep morning shadow. Great Sand Dunes National Monument, Colorado, USA

Tim Fitzharris / Larkspur (Delphinium sp) and sunflowers, Albion Basin, Wasatch Range, Utah

Shattil & Rozinski / Desert sunflowers flowering on dark sand dunes, Colorado, USA, 1995

Tim Fitzharris / Common Sunflower (Helianthus annuus) group showing symmetrical seed heads, North America