This unique design offers safety for your
Purple Martins and increases the inside nesting space within any
gourd or house. Ideal to use with natural gourds and
manufactured metal and plastic martin houses with slight
modifications. Tunnel floor measures 5 inches wide and 3
inches deep. Each kit comes with a Tunnel, interior/exterior
floors, door plugs and snaps to mount your tunnel. Select from
both round and starling resistant entry holes.
4 Ultimate Tunnel Kit
6 Ultimate Tunnel Kits
Note if using older S and K Bo & Big
Bo Gourds prior to 2007 you will not be able to use the Ultimate Tunnel
without an adaptor.