Purple Martin Attraction Bundle plastic Made in USA This bundle combines our best selling Purple Martin CDs and a life sized realistic Purple Martin decoy! The CDs are 74 minutes long. Created by Cornell Labs to provide the highest quality recording. *The Dawnsong and Daytime Chatter CDs have helped thousands of folks become martin landlords! Play loudly outdoors to attract martins! Martins hearing this will be lured in to investigate and are attracted to other martins. Especially effective when used with martin decoys! This grouping will help you maximize your attracting ability!