Published January 20th by Earth Touch News Network (here)
The sound emanating from a male greater sage-grouse during his mating display is akin to what you might hear if you rubbed nylon coats together a few times, and then added a little ‘whoop! blop!’ at the end. Males undulate their white downy chest feathers while inflating yolk-yellow air sacs like balloons. Between puffs, they strut around attempting to intimidate their competitors, flapping their wings and running one another backward.