Looking out my bedroom window, I saw a bright blue ball rolling on the lawn. Rushing outside, I broke up the fight: two male bluebirds were out for blood. Later I noticed one of the pugilists attacking his image in the rear view mirror of my car. The songbirds have returned and they are seeking nesting spots. My yard is especially desirable because it contains four bluebird houses. Yes, four bluebird houses are located in a quarter acre suburban yard.
About a decade ago, we were hiking at Shenandoah State Park. The trail along the river had a bluebird house every ten yards. When I asked a ranger, he said that two bluebird families won't live in close proximity but bluebirds aren't the only birds who use those houses. Cavity nesters are birds who live in holes in dead trees. In addition to woodpeckers, cavity nesters also include bluebirds, wrens, chickadees, titmice and house sparrows. So the bird houses are occupied in an ABCDE pattern: bluebird, wren, chickadee, titmouse, sparrow then repeat. So two bluebird families are spaced fifty yards apart and they don't fight. Ditto with the other species. Providing enough houses for every sort of bird who wants one means the bluebirds won't need to fight anybody for a house.
Cavity nesters live in dead trees. How many dead trees are left standing in the suburbs? As suburbs spread inexorably across Prince William County, where are the cavity nesters going to live? I have four bluebird houses and my next door neighbor has four also yet we obviously aren't meeting the demand. Many homeowners maintain bird feeders and bird baths. If those bird lovers were aware of the need for bird houses, would they add one?
The Nokesville Library has a Virginia Bluebird Society regulation nesting box (bird house) located in the front yard near the entrance. Last year a chickadee family called it home. Patrons who visit the library may see the birds using the house and feel inspired to place a bird house in their own yard. The Virginia Bluebird Society web page has house plans and a wealth of other useful information on their web site (www.virginiabluebirds.org)