Ruff grouse "drum "on the same log each year to attract a mate and proclaim their territory to other males.   Drumming continues  at regular intervals throughout the day and lasts through May.  Occasionally drumming is heard during the summer.  Footage acquired with a Canon 7D and C100 over two seasons.
<a rel="nofollow" class="external text" href="https://www.youtube.com/channel/UCqiXTiJco1EfYyn3o6rAUlA">Dale Bohlke</a>
CC BY 3.0
<bdo lang="en" dir="ltr"><a href="//commons.wikimedia.org/wiki/Commons:YouTube_files" title="Commons:YouTube files">YouTube</a>: <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=dA09MoGYMo0"><bdi lang="">Ruff Grouse Drumming</bdi></a> – View/save archived versions on <a rel="nofollow" class="external text" href="https://web.archive.org/web/*/https://www.youtube.com/watch?v=dA09MoGYMo0">archive.org</a> and <a rel="nofollow" class="external text" href="https://archive.today/https://www.youtube.com/watch?v=dA09MoGYMo0">archive.today</a></bdo>