House Wren Houses

House Wrens are the smallest cavity nesting bird in our area, thus they require a very small opening. The House Wren prefers multiple cavities for the male to "fill" with sticks to show off to the female. Their boxes should have a hole with a diameter of about an inch but no larger than 1 and 1/8 of an inch. House Wren houses can be free swinging or firmly mounted.