When I was getting ready to buy my first house, I took a class in home buying at a local continuing education program. As first-time home buyers most of the students were concerned with financing and inspections. The instructors spent considerable class time teaching us how to evaluate the finer points of a potential purchase. How much traffic went buy at various times of day, which rooms get the morning sun, do the neighbors put out their garbage at night or in the morning?
To create a tempting house for wildlife you can’t just get the structure right. You must imagine that you are a bird or a bat or a frog. I tried to do that when I put up the bird house I received as a gift. I selected a sturdy protective tree and hung the house so that the opening faced the back of the yard away from the house. I figured that having their entrance away from the activity of the yard would feel more secure.
I hung the house in late winter and as spring approached I put out a basket of twigs, bits of string and dog fur to provide a ready source of nesting material. Sure enough, a few weeks later, I saw a pair of birds flitting in and out of the opening. A few weeks later however it was empty. Over the summer I puzzled over the problem. What had caused the pair abandon their work and move on?
While reading the message boards on a garden site, I may have found my answer. My back yard is south of my house so I had positioned the bird house with the entrance facing south. The prevailing winds in Seattle blow almost exclusively north so whenever the wind picked up, it was blowing right into the house. I could definitely see where that might be a problem trying to sleep and even worse for fragile eggs and nestlings.
In February I brought the house down. Pivoting the disc in the back to expose the clean-out , I dumped out the old nesting materials and made sure that nothing else had taken up residence. Then I went back up the ladder and found a secure place to hang the house with the opening pointed northeast.
The other day when I got home from work I noticed a bit of twig in the doorway. Today it wasn’t visible. I will be watching over the next few weeks to see if new residents are setting up house.