The Natural Bird Guardian
by Audubon Entities 

This new product promises to protect nesting birds from predator attacks.

Patented, Tested, Approved One-of-a-kind Year 'Round Protection 

• Easy to screw-on. Includes mounting screws.
• Wide flange covers squirrel and woodpecker damaged entrance holes.
• Designed by naturalists, tested and approved!
• Featured on The Today Show!
• Approved by The Humane Society, Chapters of the Audubon society, the Royal Society for the Protection of Birds in England (well over 2,000,000 members) and more!
• Recognized by major newspapers across the country, including the Chicago Sun Times, Denver Post, Boston Globe and others!
  

Special recommendations for Bluebirds:

Due to the sensitive nature of the Bluebird, the manufacturer recommends attaching the Bird Guardian with careful monitoring of the Bluebird house. Should either of the pair not accept the Bird Guardian within 30 minutes or so, remove and attach it again later, repeating as needed with continued observance. Once the pair have both been seen entering the box, you have success.