Donald M. Jones / Ruffed Grouse (Bonasa umbellus) in defensive display, Yaak, Montana

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

Donald M. Jones / Ruffed Grouse (Bonasa umbellus) male in spring, western Montana

Gerrit Vyn / Ruffed grouse (Bonasa umbellus) displaying neck "ruff". The ruff is most often displayed once a female is present. Okanogan County, Washington. April.

Gerrit Vyn / Ruffed grouse (Bonasa umbellus) male displaying neck "ruff". The ruff is most often displayed once a female has been attracted by the males drumming and is present. Okanogan County, Washington, USA Ap...

Matthias Breiter / Ruffed Grouse (Bonasa umbellus) male drumming, Kenora, Ontario, Canada

Michael Quinton / Ruffed Grouse (Bonasa umbellus) male in courtship display, North America

Markus Varesvuo / Hazel grouse (Tetrastes bonasia) standing in snow at forest edge. Helsinki, Finland. February.

Markus Varesvuo / Hazel grouse (Tetrastes bonasia) standing in snow at forest edge. Helsinki, Finland. February.

Markus Varesvuo / Hazel grouse (Tetrastes bonasia) headshot, portrait. Helsinki, Finland. February.

Markus Varesvuo / Hazel grouse (Tetrastes bonasia) standing in snow. Helsinki, Finland. February.

Michael Milicia/ BIA / Ruffed Grouse (Bonasa umbellus), Alberta, Canada