Wild Wonders of Europe / E. Haarberg / Male Black grouse (Tetrao tertrix) displaying, expiring warm air on a cold morning, Bergslagen, Sweden, April 2009

Sergey Gorshkov / Minden / Northern Goshawk (Accipiter gentilis) feeding on Black Grouse (Tetrao tetrix) female in winter, Finland

Markus Varesvuo / Two male Black grouse (Tetrao / Lyrurus tetrix) fighting at lek. Utajarvi, Finland, April.

Markus Varesvuo / Black Grouse (Lyrurus tetrix) male displaying with bokeh effect in the foreground, Liminka, Finland, March

Markus Varesvuo / Black Grouse (Lyrurus tetrix) male displaying with bokeh effect in the foreground, Liminka, Finland, March

Sven Zacek / Black Grouse (Tetrao tetrix) two males facing off on a lekking site, Varumaa county, Southern Estonia. April.

Erlend Haarberg / Black grouse (Lyrurus tetrix), male calling early in the morning, Norway. May.

SCOTLAND: The Big Picture / RF - Black Grouse (Tetrao tetrix) male peforming flutter jump display on lek, Cairngorms National Park, Scotland, UK.May (This image may be licensed either as rights managed or royalty free.)

SCOTLAND: The Big Picture / RF - Black Grouse (Tetrao tetrix), two males fighting on lek , Scotland, UK.April (This image may be licensed either as rights managed or royalty free.)

Sergey Gorshkov / Black Grouse (Tetrao tetrix) males fighting at lek in the snow, Tver, Russia. April

Markus Varesvuo / Female Black grouse (Tetrao / Lyrurus tetrix) perched in tree covered in snow, Inari Kiilopaa, Finland, January.

Markus Varesvuo / Black grouse (Tetrao / Lyrurus tetrix) flock flying in snow, Suomussalmi, Finland, January.

Markus Varesvuo / Female Black grouse (Tetrao / Lyrurus tetrix) perched in Willow feeding, Utajarvi, Finland, May.

Markus Varesvuo / Male Black grouse (Tetrao / Lyrurus tetrix) flying, Utajarvi, Finland, April.

Markus Varesvuo / Male Black grouse (Tetrao / Lyrurus tetrix) with breath visible in cold, Liminka, Finland, March.

Markus Varesvuo / Two male Black grouse (Tetrao / Lyrurus tetrix) fighting, Utajarvi, Finland, April.

Markus Varesvuo / Two male Black grouse (Tetrao / Lyrurus tetrix) fighting, Kuusamo, Finland, April.

Markus Varesvuo / Male Black grouse (Tetrao / Lyrurus tetrix) in snow, Utajarvi, Finland, May.

Markus Varesvuo / Male Black grouse (Tetrao / Lyrurus tetrix) portrait, Utajarvi, Finland, May.

Sven Zacek / Black grouse (Tetrao tetrix) males lekking at sunrise, Southern Estonia, April.

Markus Varesvuo / Black grouse (Lyrurus tetrix) mating in snow, Utajarvi, Finland, May.

Markus Varesvuo / Black grouse (lyrurus tetrix) female and chick at nest, Vaala, Finland, June.

Markus Varesvuo / Black Grouse (Tetrao tetrix) displaying with breath vapor at dawn, Utajarvi, Finland, April

Markus Varesvuo / Black Grouse (Tetrao tetrix) female on frosty branches, Kuusamo, Finland April

Markus Varesvuo / Two Black Grouse (Tetrao tetrix) hens in snowy tree, Kuusamo, Finland, January

Mark Hamblin / 2020VISION / Silhouette of two male Black grouse (Tetrao tetrix) displaying at lek at dawn, Cairngorms NP, Grampian, Scotland, UK, April. 2020VISION Book Plate.

Orsolya Haarberg / Two Black grouse (Tetrao tetrix) males displaying at lek, Bergslagen, Sweden, April

Markus Varesvuo / Male Black grouse (Lyrurus tetrix) in flight, displaying at lek, Liminka, Finland, April

Markus Varesvuo / Male Black grouse (Lyrurus tetrix) displaying, portrait, Askola, Finland, March

Markus Varesvuo / Black grouse (Lyrurus tetrix) hen perched in frost covered tree, Kuusamo, Finland, February

Markus Varesvuo / Black grouse (Lyrurus tetrix) hen perched in frost covered tree, Kuusamo, Finland, February

Sven Zacek / Two Black Grouse (Tetrao tetrix) fighting at a lek. Virumaa, Estonia, Europe, April.

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) male in flight at lek, Cairngorms NP, Grampian, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) female at lek, Cairngorms NP, Grampian, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) male displaying at lek, Cairngorms NP, Grampian, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) males displaying flutter jump at lek, Cairngorms NP, Grampian, Scotland, UK, April. Did you know? Adult grouse are mostly vegetarian, but their young primarily eat insects...

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) two males displaying and fighting at lek, Cairngorms NP, Grampian, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) male displaying at lek, Creag Megaidh NNR, Highlands, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) female at lek amongst heather, Creag Megaidh NNR, Highlands, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) female at lek, Creag Megaidh NNR, Highlands, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) male at lek, Creag Megaidh NNR, Highlands, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) male displaying at lek site, Cairngorms National Park, Grampian, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) female at lek on heather moorland with two males displaying nearby, Cairngorms NP, Grampian, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) male displaying at lek, Cairngorms National Park, Grampian, Scotland, UK, April

Mark Hamblin / 2020VISION / Rear view of Black grouse (Tetrao tetrix) male displaying at lek, Cairngorms National Park, Grampian, Scotland, UK, April

Mark Hamblin / 2020VISION / Black grouse (Tetrao tetrix) male displaying at lek, Cairngorms National Park, Grampian, Scotland, UK, April