A cozy, comfortable, clean cage is the best thing you can do for your bird. Setting up the right environment for your bird will not only make your bird happy, it will make it easier for you to maintain the bird cage.
First of all get an idea about the species you are trying to adopt as a pet.With that idea of species, you can justify the bird cage size. If you are going for a large bird, then the cage should be long in width and tall enough so that the bird can play, fly from one end to other and get sufficient area to spread its wings.
If your bird is small in size, there is no need of a big cage and some species of birds like parakeets, finches, canary’s love small and compact cages. But, other species of small birds get along well with the cages which are taller than its width.
Points to remember
A. Cages should be as long as or longer than they are tall. Birds tend to fly lengthwise, not up and down, and we can make them feel more comfortable with a long cage. Tall cages are fine for canaries, but certainly do not meet the needs of budgerigars("parakeets"), cockatiels, or other hookbill birds.
B. Perches in cages are best made of natural material. The ideal perch would be a branch from a citrus or fruit tree, oak, manzanita, or eucalyptus tree with the bark still intact. One need not worry about mites if the perch is first sprayed with any common mite spray available at your local pet shop. They are easily replaced, and are excellent nutrition and excellent exercise. Never use sandpaper covered perches as this will irritate the feet. Try to have perches of several different diameters to avoid pressure sores from continual pressure in one part of the foot.
C. The bottom of the cage should be covered with wax paper or newspaper or an appropriate litter material designed for birds. This makes an excellent bottom cover, as it does not spread moisture all over the cage from a single accident or dropping. Furthermore, the paper can be lifted out daily, allowing one to estimate the number of droppings per day and thus monitor the bird's appetite. Do not use sandpaper on the cage floor.
D. No gravel or mineral grit should be used in any cage used by a pet hookbilled bird. Canaries, doves, and finches may have grit if desired mixed in food at the rate of one teaspoon per pound.
E. Cuttlebone should be placed in all cages with the soft side in. This means the flaky side out where the bird can get to it and the hard shell near the outside of the cage. The cuttlebone should be placed at head height, within easy reach for the bird.
F. Aluminum cages are more suited to today's bird care than painted cages, and will give much longer service, well compensating for their cost. Be careful to avoid old painted cages or imported cages that may contain lead based paint since this is toxic to your bird. Galvanized cages may also contain lead as do many soldered cages.
G. SEED AND WATER CUPS-- One large cup is needed for water. Usually one large cup and at least 3-4 other small (treat) cups are needed for food. Wash the water and fresh food containers frequently.
H. TOYS-- These depend on the type of bird. For some birds they are very important and may help prevent feather picking. Do not use small weighted toys for large birds. Avoid toys that are potentially hazardous. Toes or beaks may become caught in small holes such as those present on jingle bells.