Purple Martin Nesting House PlansPurple Martin Nesting House woodworking plans. All plans complete with detailed reduced scale drawings and step by step cutting and assembly instructions. All four plans include deeper than normal well ventilated nesting cavities and three of the four incorporate divided porches to reduce nesting bird conflicts. All plans are easily disassembled for annual cleaning and maintenance. Designs by Bruce Barber formerly Bruce Barber Bird Feeders Unlimited