Woodpeckers

Sometimes woodpeckers will start pecking holes in your wood sided home for no apparent reason. Actually there are two reasons why they do this. One reason is that they are trying to attract a female during breeding season, by drumming. The other reason is that they think there are insects under the siding. The first reason usually lasts for a very short time, say several weeks at most. While the second reason could last for longer periods of time. 

The pecker, during mating season finds that you house sounds good to him for drumming up female and he continues until one accepts him as a mate

Pecker hear the insects under bark etc. and that is why he is making holes, to eat the insect. Sometimes there is a sound being produced something vibrating in the wall, house etc. If you have a stethoscope, you can sometimes locate the cause of the vibration and stop it. If you don't own one, use a glass by holding it to the wall and putting your ear against the bottom of the glass. 

You can sometimes stop them by hanging strips cut from a plastic leaf bag, over a piece of binder twine attached to the wall from one side to the other. Drive a spike in the edge of each side of the wall and tie the string to the nails near the head so that the string is away from the wall several inches. Now loop the plastic over the string and staple together so that it doesn't fall. As the bird flies near, the black plastic flutters causing the bird to think a hawk is after it. Thus it flies away and each time it returns the same thing happens until eventually it quits coming back.