Designing and Building a Purple Martin Birdhouse MM 136

Last spring my buddy and I decided we didn't know much about the requirements for a Purple Martin Birdhouse, except that there are several guidelines for both the construction and placement of the boxes. I volunteered to research the issue and build a Purple Martin House in time for the next spring breeding season. Today we go over some of those requirements and build the box.
Wherever possible the boxes are constructed for easy disassembly for repair and cleaning. Entry into the nests is accomplished by building the box in two main stackable layers. Lifting the layers apart gives access to all the nests at once. Additionally, the whole house is rigged to a 12 foot telescoping pole, designed and sold specifically for Purple Martin Houses.