Birdwatching Video: Ruffed Grouse's or Partridge's Mechanical Sounds
This video explains how the Ruffed Grouse (Partridge) uses a mechanical thumping sound rather than a vocalization to attract mates and establish territory. The expert demonstrates the sort of thumping sound the Ruffed Grouse makes and explains how birders can use this sound to identify the species.
Previous - Bird Identification Video: Mechanical Sounds Of Birds
Next - Bird Identification Video Through Bird Songs
Video Courtesy: Expert Village