I'm not really sure, but one night me and my sisters heard a really creepy screeching, almost like something was dying or being killed. To this day, we still don't know what it was, but I think it...
1. First you need to have a small amount of saliva in the front of your mouth
(amount may vary)
2. then you need to pucker your lips as if to do that "mucus drop and suck back up" thing
3....
The Ruffed Grouse male attracts females to his territory by raising his ruffs and crest, fanning his tail, and beating his wings to make a hollow, accelerating, drumming noise.