Iodine deficiency is a common problem in many caged birds but is especially common in the Australian birds.  The Australian birds seem to need more iodine than other pet birds.  Iodine is required for the proper functioning of the thyroid gland.  Deficiencies can result in poor feather condition, difficulty molting, breathing problems, reduced singing, reduced activity and poor breeding.  Liqui-Kelp provides the additional iodine needed by the Australian finches.  Just 2-4 drops per quart of drinking water provides the additional needed iodine and eliminates the balding that is so common in Lady Gouldians.