There must be a piece of wood that has to be placed therein to allow the birds to perch or sit. You could choose from either the kin dried hardwood, cedar, or ply-board. The exterior design. Non-toxic paints and weather-resistant furnishing need to be employed in the birdhouse. The nesting cavities. There has to be a separate place for nesting to keep the birdlings protected. And there is some of this bird house kit that answers to the needs of a different variety of birds. Some bird house kits are also made in order to protect birds from all sorts of dangers like heavy winds, storms and of course, birds' natural predators. They can also help avoid parasites from living into the nests of birds which are the number one cost why eggs don't hatch and why birds die. Your painted bird house should also serve its main purpose of providing a sound shelter to birds. It should be durable enough to make it through stormy weather and cool during sunny days. A well-built bird house that serves these purposes well will mean that you can have your favorite birds alive and in good health for a long time. Also, putting some water alongside the feeders can help them with attracting birds; keep them well filled up so they can easily have the convenience of water without getting to travel far, thus another thing to make them settle in your pre-built bird house. With their natural habitat being limited, you can always give them a new habitat to live on. These can lead to serious health dangers to your birds. Those lumbers that are categorized as "pressure-treated" has toxic chemicals can also poison the old and nesting birds. Using paint is definitely a no-no. Flaking paints might be mistaken as food and can be eaten by your birds. Furthermore, plastics and metals are not also appropriate in building avian houses since both are prone to heat. Bird houses come with intricate designs. 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.