Planning an aviary
Careful planning: What size are you thinking of? The bigger the better. I do not believe that the effort of a larger aviary is much higher than that of a small. The smaller an aviary is, the more frequently you have to clean it.
And always remember: the future inhabitants must get along with the available space, since there is no additional free flight possible. Flying greater distances contributes to the birdies' health and well-being.
I would recommend that, for small birds such as budgerigars, canaries, zebra finches etc., the free flight area should not be smaller than 2 x 3 meters. Do not forget the protective house in addition. For larger species, the minimum dimensions should be correspondingly bigger.
The right place for the outside aviary
In most cases, one does not have a great selection of places in your own garden where an aviary can be built. However, if possible, the location should be wind-protected so that the birds are not completely exposed to bad weather.
Therefore a wall, house wall or bushes in the "back" of the aviary are very useful.
The Wellivilla was built in front of a half-high wall, which does not provide a proper draft shield. Therefore, the entire rear of the outdoor area is clad with acrylic glass panels instead of wire. In this way I have a draft shield, which is at the same time translucent. The flight space is thus closed on two sides - on the left it sides with the protective house.
Another point is the alignment. Will the aviary get enough light? The birds should definitely have the opportunity to sunbathe. A location that is shaded around the clock is therefore very unfavorable. To get shadow in the aviary is not a big problem, but when there is no sun, there is no way to conjure it.
Read here how I planned my aviary: Planning the Wellivilla