Purple martin birdhouse
A plywood birdhouse with eight compartments per level, a removable roof and a central air shaft.
About this plan
Choose one level with eight compartments or two levels with sixteen. The roof and upper level lift off for cleaning. The 6-inch rooms and 2-1/2-inch entrances differ from current purple martin housing recommendations.
BEFORE YOU BUILD
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Sources
Based on the 1969 Purple Martin Birdhouse drawing hosted by North Dakota State University. Models, drawings and instructions by DIY Plans.