The Purpose of this tunnel is to provide safety for the Purple Martin and increase the nesting space within the gourd.
5" wide and 3" Deep. The Floors have Traction inside and out.
Round & Starling Resistant Entrance
With a Minor amount of Customizing the Ultimate Tunnel will fit:1.) Natural Gourds2.) All other Manufactured Plastic Gourds
The Ultimate Tunnel Makes a Trio and a Coats house in to a modern and safe house. Photo by John Atteberry
Also makes a perfect entrance for a "Home Made" Wood House. With
This is the Adapter required for the Bo Gourd and the Big Bo Gourd
