Blue bird house plan - from freebirdhouseplans.net
Bluebirds and wrens, as well as swallows, nest in this style of house though they prefer a deeper cavity.- Drawings, instructions and materials list. In standard dimensions (ft and ins) and made out of 3/4" board.
A Birdhouse for Beginners - from Birds and Blooms
While this birdhouse is as simple as it gets, it has a lot going for it. It can be made very quickly, uses minimal materials and tools and boasts a sleek look that will make any budding woodworker proud to say, "I built it all by myself!". Drawings, instructions and materials list. In standard dimensions (ft and ins).