Bird House Box – Wood is by far the most popular choice for home building materials for birds. Cypress is a natural choice for aviaries because of its durability and resistance to rot and weather. When building a house for cypress birds. Remember to build the aviary with the dimensions that will suit the particular birds you want to stimulate. Or have seen in your garden, as the birds look for a house close in size to the of their natural nesting preferences. Cut a 2-inch diameter circle from one 8-by-8-inch block using the jigsaw. Right in the middle, through the bird house box entrance….