Maintain the temperature between 65°F to 70°F. Place them in an area that is welllit and away from drafts. Be careful when placing them near walls – I experienced having mice enter the cages and killing my finches. Make sure there are screens or wires that are close enough to each other to serve as barriers so that finches or mice cannot pass through.
A rectangular housing is preferred to a circular type. Perches should at least be three inches long and 1/4 to 1/2 inch in diameter.
There are a variety of perches that could prevent arthritis. Do not use sand paper covers on perches.
You may also need a metal grate over the droppings tray to keep the bird away from droppings. Line the droppings tray with habitat paper or appropriate substrate for easier cleaning.