Architectural Designs

wrenhouse-fp.jpg

wrenhouse-fp.jpg

Summary: bluebirds will be different than one for ducks, of course. Also, the appropriate size hole will exclude certain undesirable species. For example, a hole size 1 1/8 inch in diameter will exclude starlings and house sparrows , which often monopolize

Image Dimensions: 175 x 282

Image originally found here.