As much as possible, do not use lumber. A lumber when wet, can emit vapor that can poison the birds. Making use of preservatives such as paint or stain outside the bird house can also help enhance the durability of the house. However, chemical preservative should also be avoided. Moreover, never use cans, tins, cartons, and even metal as these materials might overheat and eventually destroy the bird eggs. It is also one way of preventing bigger animals from playing and eating the birds inside. In addition, the roof can prevent moisture from seeping inside the bird house. This serves the same purpose as the walls that you need to have in the bird house. 3. Space. If you have more than one bird deck house in your house or garden, keep them some feet apart from each other. Most of them have a unique detailed roof and vivid colors. You can always get some of them online. Getting to choose from a variety can always be good when selecting and getting your ideal design of your customized bird house. There are also customized houses for your pets; there are designs of nest boxes' mimicking farms, boats, windmills, cottages and other themes that are rare. The nest parasites should be prevented from gaining habitat therein. The ventilation. Holes must be incorporated or even chimneys to allow proper ventilation. Drainage holes could also be applied. The solid wood built-in. There must be a piece of wood that has to be placed therein to allow the birds to perch or sit. Together with the finished picture of the bird craft house, the instructions on how it is done are also given there. The best way to enjoy making the bird craft house. Let your children participate in the making of the bird craft house. You will find that it is one experience you would not want to miss. Bird predators can be your cat, dog or some rodents in your place. These predators can be found both inside and outside your home. Make sure that you place your painted bird house where these predators cannot get through them. Environmental factors like rain or heat from the sun can also be considered a predator to birds.