Millet Spray also makes an excellent supplement for finches. Finches require fresh water each day. Wash and rinse their water cup out thoroughly prior to adding fresh water to reduce bacteria growth. Powdered vitamins can be lightly sprinkled on the fresh food, but putting it in the water can encourage bacterial growth. When choosing a cage for your finch, remember length is more beneficial to the bird than height.
Finches enjoy flying, therefore, the larger the cage the better.
Perches are an essential part of the cage and should be chosen to suit the feet of the finch. A variety of perch sizes, shapes, and diameters will help exercise the bird's feet and toes. Place perches strategically to prevent droppings from contaminating water and food dishes and to prevent the tail from hanging in dishes or on the floor. Toys, such as bells and mirrors, in the finch's cage will keep your bird entertained. Always have a cuttlebone to supply your finch with calcium and prevent beak overgrowth.