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 Hazel grouse (Tetrastes / Bonasa bonasia) portrait, Kuusamo, Finland, June.

Markus Varesvuo / Willow grouse / Ptarmigan (Lagopus lagopus) fluffed up perched in snow, Inari, Finland, February.

Markus Varesvuo / Male Capercaillie (Tetrao urogallus) flying, Jalasjarvi, Finland, April.

Markus Varesvuo / Male Capercaillie (Tetrao urogallus) display jumping, Vaala, Finland, May.

Markus Varesvuo / Willow grouse (lagopus lagopus) flock in flight in snow, Utsjoki, Finland, October.

Markus Varesvuo / Capercaillie (Tetrao urogallus) chicks huddled together, Kuhmo, Finland, June.

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

Markus Varesvuo / Female Capercaillie (Tetrao urogallus) with three chicks, Kuhmo, Finland, June.

Markus Varesvuo / Male Willow grouse / Ptarmigan (Lagopus lagopus) portrait, Inari Kiilopaa, Finland, February.

Markus Varesvuo / Golden eagle (Aquila chrysaetos) plucking Capercaillie (Tetrao urogallus) Kuusamo, Finland, April.