May Fourteenth
At intervals during the day, a distinct booming sound is heard coming from the forests. At first the beats are slow and measured, but as they are repeated the time quickens, until they finally blend, and then gradually die away. This is the "drumming" of the ruffed grouse, produced by the cock bird beating with his wings against the sides of his body. At this time of the year it is his love song, but you can hear it at other seasons as well.