Woodlink Seed Tube Feeder Birds Choice It is approved by the

It is approved by the North American Bluebird Society

The crescent shaped holes are advisable if you have starlings in the area that will compete with the martins for nesting

75"W x 8"D

and even antennas on the roof

Weight 35" - 1 pound

Woodlink Seed Tube Feeder Birds Choice It is approved by theSeed Tube Feeder Features Birds will feed comfortably on individual perches at four feeding ports. The feeder cap and base are metal. Tube is a clear polycarbonate to keep the seed level visible at all times. Drainage holes on the bottom tray help keep the seed fresh and prevent rot. Consider optional seed catcher tray for this one; saves on seed costs and keeps seed and critters off the lawn. The metal roof slides up easily for cleaning and seed