Marie Read / Red-winged blackbird (Agelaius phoeniceus) male calling and displaying, backlit, showing steamy breath on a chilly spring morning, Ithaca, New York, USA, April.

James Dunbar / Sweat bee (Lasioglossum) condensing nectar on a Thistle (Cirsium) flower, England, UK, September.

Markus Varesvuo / Black Grouse (Tetrao tetrix) male displaying with breath condensing in cold air, Kuusamo, Finland April

Markus Varesvuo / Black Grouse (Tetrao tetrix) with breath condensing in air, Liminka Finland March

Markus Varesvuo / Black Grouse (Tetrao tetrix) with breath condensing in air, Liminka Finland March

Mark MacEwen / American Elk (Cervus canadensis) stag with breath condensing in the air, on golf course during the rut, in Estes Town, Rocky Mountains, Colorado, America, September.

XI ZHINONG / Wild yak (Bos mutus) with breath condensing in the cold air, Kekexili, Qinghai, Tibetan Plateau, China, December

Milan Radisics / Female Red fox (Vulpes vulpes) with breath condensing in cold air at night, walking along tree trunk, Vertes Mountains, Hungary.

Markus Varesvuo / Male Black grouse (Tetrao / Lyrurus tetrix) calling at lek, with breath condensing in cold air. Kuusamo, Finland, April.

Markus Varesvuo / Male Black grouse (Tetrao / Lyrurus tetrix) calling at lek, with breath condensing in cold air. Kuusamo, Finland, April.

Markus Varesvuo / Male Black grouse (Tetrao / Lyrurus tetrix) at lek, with breath condensing in cold air. Kuusamo, Finland, April.

Markus Varesvuo / Two male Black grouse (Tetrao / Lyrurus tetrix) confronting eachother at lek, with breath condensing in cold air. Kuusamo, Finland, April.