You can also use your aviary to attract your favorite bird species. However, note that Most birdhouses are of a standard size to attract most small to medium sized bird species. The houses themselves are typically around 12cm high, 8cm deep and 6cm wide, which is suitable for many species of birds.
The most important factor is how big the entry hole is. The hole needs to be big enough for the bird you want to attract, but small enough to keep larger birds and predators out. For example a songbird would use a 1½ inch hole and wrens Like a 1 ¼ inch hole according to bird experts.
Certain birds also like certain types of bird feeders. For example, Robin such as platforms / shelves and martins like apartment buildings with multiple openings. The important step is to find out what kind of habitat your favorite bird needs and buy it accordingly.
You can also search for birdhouses based on the species of bird you want to attract. For example, if you use “Owl Birdhouse” you might get a bird box made specifically for the tawny owl.