I had a friend who had some bluebird houses and was bemoaning the loss of the hatchlings to blow flies.
We got to talking about diatomaceous earth for insect control, so she sprinkled some on the nests and on the new hatchlings and said it made a huge difference in their survival rate.
I want to have mr. mm build some bluebird houses for us for next summer.
It can be a winter project.
That’s a good project. They eat a lot of our garden bugs. We don’t have a fly problem, just a house wren problem.