You can opt for the typical metal cages, all-natural woods or exotic bamboos. You can think up other designs on your own just as long as you know that your birds will be comfortable in them. Creating fancy bird houses are no different from building any other type of structure. You need to come up with a plan first on how it can be constructed. Some of them might just be there in your backyard. Now, how do you make a bird craft house? All you ever need is a yarn or scrap materials, a strawberry basket and some pieces of paper. Once you have these things, carefully weave the yarn or scraps of fabric into the basket holes. When this is done, you can now fill the strawberry basket with the shredded pieces of paper. Giving them the needed things for nesting can always lessen their efforts in searching; keep some pieces of strings or yarns and probably nesting materials where they can be found easily. With a custom designed kit, you can always maximize its usage with proper installation, having to consider their characteristics can suggest a probably place to put them. Usually, a gourd bird house is build for purple martin birds. A hole that is 2 to 3 inches in size is the usual size for these birds to enter. Make a smaller hole on the bottom of the bird house for the drainage. 7. Clean the entire inner part of the gourds. Scrape out all the seeds. As much as possible, pour a little water to make sure that all the dusts are removed. It can also vary if their type is single to apartment-type bird houses. A design principle can be derived if you invest on some research and canvassing. As a general rule in planning, never skimp on quality as they can always show in time. Going to the pet shop and ask for specific details can always be rewarding, if you don't have any knowledge whatsoever with your preferred kit, you can always ask them and compare their kits with each other. You can try getting more information about the specific birds and their required measurement and dimensions on the internet. 3. For the materials, it is best to use untreated lumber or wood for your bird house. Apart from the imitating the natural habitat of the birds, natural woods lessens the risks of overheating and poisoning.