Two male Greater Prairie Chickens displaying to a female in Illinois, USA.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/gregthebusker/">GregTheBusker</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/gregthebusker/4519737098/in/set-72157623850278060/">Prairie Chicken Flirting</a>