As a substitute for eye screws, you can drill holes through the opposite edges of the roof boards and tie your wire there. Fasten the bottom in place with screws so that it can be removed to clean the box. The sides which fit under the roof can be beveled, but this is not necessary. A square cut works just as well.
House wrens seem to prefer areas with trees and shrubs.
Fencerows and brushy draws are ideal. Bewick wrens seem to prefer more open coun-tryside and frequent farmsteads more than urban lots. It pays to put up two or three wren houses in a back yard. The houses may be 20 to 50 feet apart. Males sometimes attract two females to use extra houses.