Markus Varesvuo / Hazel Grouse (Tetrastes bonasia) perched on a thin twig, possibly looking for buds to eat. Kuusamo, Finland, February.

Markus Varesvuo / Hazel Grouse (Tetrastes bonasia) perched on a thin twig, possibly looking for buds to eat. Kuusamo, Finland, February.

Markus Varesvuo / Hazel Grouse (Tetrastes bonasia) in snow laden tree, Kuusamo Finland February

Philippe Clement / Hazel grouse (Tetrastes bonasia) eating male catkins from Common hazel (Corylus avellana) in the snow in early spring, captive, Bavarian Forest National Park, Germany, March

Markus Varesvuo / Portrait of a Hazel Grouse (Tetrastes bonasia) perched on a thin twig. Kuusamo, Finland, February.

Markus Varesvuo / Hazel Grouse (Tetrastes bonasia) perched on a thin twig, possibly looking for buds to eat. Kuusamo, Finland, February.

Bruno D'Amicis / Hazel Grouse/Hen (Tetrastes bonasia) camouflaged female incubates eggs in nest on forest floor. Western Tatras, Slovakia, May.

Bruno D'Amicis / Hazel Grouse/Hen (Tetrastes bonasia) female perching on Rowan (Sorbus aucuparia). Western Tatras, Slovakia, April.

Bruno D'Amicis / Hazel Grouse/Hen (Tetrastes bonasia) camouflaged female incubates eggs in nest on forest floor. Western Tatras, Slovakia, May.

Jorma Luhta / Hazel grouse {Tetrastes bonasia} Finland

Yuri Shibnev / Seven Hazel grouse {Tetrastes bonasia} eggs in nest, South Primorsky Region, far east Russia

Staffan Widstrand / Female Hazel grouse {Tetrastes bonasia} Sarek NP. Lapland, Sweden.

Staffan Widstrand / Female Hazel grouse {Tetrastes bonasia} Sarek NP. Lapland, Sweden.

Jorma Luhta / Female Hazel grouse walking across snow {Tetrastes bonasia} Finland

Asgeir Helgestad / Hazel grouse {Tetrastes bonasia} Norway

Asgeir Helgestad / Hazel grouse {Tetrastes bonasia} Norway

Asgeir Helgestad / Hazel grouse {Tetrastes bonasia} Norway

Asgeir Helgestad / Hazel grouse {Tetrastes bonasia} Norway