“To identify a sound as belonging to a certain species requires an audio recording of sufficient quality and volume to be analyzed in sound editing software. The sound must then be compared to a sound recording of a known species. A poor quality recording that has been distorted with bad filtering techniques is next to worthless.”

Examples of poor quality sound recordings.

1973 Whoop-Howl from Puyallup, Washington

1978 Whoop-Howl from Snohomish County, Washington

Examples of good quality sound recordings.

2006 – Illinois howl

2009 – Colorado Howl