Here's my simple instruction to make your own cage in case you don't have enough budget for the commercially available cages. This design is suitable for a breeding pair or a flight cage for 4-6 birds.
Materials/Tools needed:
1-meter Galvanized Welded wires # 16 (4 ft x 1" x 1 ")
Cable wire tie, the bigger the better
Galvanized wire # 18
Steel Cutter
Long Nose pliers
Measuring tape
1 piece of straight wood as a guide
Rubber mallet or any wood that is handy
With 4 ft galvanized welded wire cut 16" lengthwise, make two 4ft x 16".
Then divide it to 3 crosswise with 16" measurement (48 inches / 3 equals 16").
Fold it using straight wood and a mallet. Repeat folding with the same measurement to other half of galvanized welded wire.
Then attach the two folded galvanized wire to form a cube.
Attach each side by folding the excess wire.
As much as possible fold like this in order to have a strong hold and to prevent breaking of wire during folding.
Output after folding or attaching all sides.
Then after all side has been folded and secured, choose a location where you can make a door. 4"x5" will be enough for you to replenish food and water and to prevent them from escaping during feeding. Cut the desired area and fold excess wire. Since you have excess wire from 4ft x 1 meter galvanized welded wire, it's enough to make a door. just cut 6 inches and attached or combine it to form a 6"x6" door. It's better that your door is bigger in dimension compared to door you've cut from the cage.
Then make a door lock, in this case you can choose or make your creative imagination to make a door lock. There are many available lock in the hard ware, but here's a improvised lock made of wire.
Cut at least 6" of wire.
Place it in the lower portion of the cage door.
Put the door of 6"x6" dimension. Use a bigger cable wire tire if possible.
Put perches for your birds, make sure that the diameter is not too big and not too small. See to it that your bird can grip or hold the perch 1/3 of the diameter for them to have a strong hold during mating. You can use Guava branch, Sampalok or Tamarind Branch, Narra Branch, or any branch of trees that is hard enough or will last long enough.
You can or may put 2 perches with one swing perch for your bird to play with.
Here's the finished product, you may hang it or nail it to the wall.
You can make also 3 division cages for breeding.