Klaus Echle / Weighing cone harvest of Douglas Fir (Pseudotsuga menziesii) trees . Black Forest, Germany, August.

Klaus Echle / Cone harvest from Douglas Fir (Pseudotsuga menziesii) trees, Black Forest, Germany, August.

Suzi Eszterhas / Painted Bunting (Passerina ciris) perched on fir cone, on grass, Red Corral Ranch, Texas, USA, April

Andy Sands / Deer fly (Chrysops quadratus) on fir cone, Captive, UK

Brian Lightfoot / Fir cones of Korean pine {Pinus koraiensis} Scotland

Brian Lightfoot / Noble fir tree with cones {Abies procera} Scotland, UK

Brian Lightfoot / Noble fir tree cones {Abies procera} Scotland, UK

Nature Production / Veitch Fir cones {Abies veitchii} Tochigi, Japan

Shattil & Rozinski / North american red squirrel {Tamiasciurus hudsonicus} hiding Douglas fir cone in midden, USA

Shattil & Rozinski / North american red squirrel {Tamiasciurus hudsonicus} searching for fir cones at top of Douglas fir tree, USA

Shattil & Rozinski / North american red squirrel {Tamiasciurus hudsonicus} hiding Douglas fir cone in midden, USA

Shattil & Rozinski / North american red squirrel {Tamiasciurus hudsonicus} feeding on Douglas fir cone, USA

Shattil & Rozinski / North american red squirrel {Tamiasciurus hudsonicus} feeding on Douglas fir cone, USA

Shattil & Rozinski / Douglas fir squirrel / Chickaree {Tamiasciurus douglasii} feeding on fir cone, Colorado, USA

Konstantin Mikhailov / Fir cones of Bhutan Pine (Pinus wallichiana) Himalayas, Nepal

Konstantin Mikhailov / Ripe fir cones of Siberian Pine (Pinus sibiricus) Altai mountains, SE Siberia, Russia

Philippe Clement / Douglas fir cone {Pseudotsuga menziesii} Belgium

Sumio Harada / Red Squirrel (Tamiasciurus hudsonicus) eating seeds from a Douglas Fir (Pseudotsuga menziesii) cone, Rocky Mountains, Montana

Jose B. Ruiz / Crested tit on fir cone {Lophophanes cristatus} Spain

Paul Hobson / Great tit feeding on fir cone {Parus major} UK

Jose B. Ruiz / Crested tit on fir cone {Parus cristatus} Spain