Do wrens eject young bluebirds from their houses?
The wrens you are seeing at your feeders are probably Carolina wrens. They can co-exist with bluebirds peacefully. The wrens that cause problems are house wrens, which migrate south for the winter and will return in April and May to set up territories. Place your bluebird houses in the middle of a large grassy area, such as a meadow or large lawn. Place your wren houses along the edge of the trees or woods. This will keep the house wrens and bluebirds from fighting over housing.
