Millet has antinutrients that hinder the absorption of some of the essential nutrients in the body such as calcium and iron. Birds like millets as it supports the digestion process in their bodies.
It's true that millet is especially bad for birds, as is any all-seed diet. Pelleted foods are better. However, seed-based diets usually cause something called fatty liver disease. It often takes a long time to develop. Birds such as juncos, doves, towhees, sparrows and quail are all birds that naturally forage on the ground for food. These same birds love Millet when offered in a tray feeder near the ground. It's a small, round seed that can be offered alone or as part of a seed blend. Millets are generally considered safe to consume, and there are no significant side effects associated with their consumption. However, consuming millets in excessive amounts may cause digestive problems, allergies, and interfere with nutrient absorption due to their anti-nutrient content. Despite millets' multiple health benefits, they also contain anti-nutrients compounds that block or reduce your body's absorption of other nutrients and may lead to deficiencies. One of these compounds phytic acids interferes with potassium, calcium, iron, zinc, and magnesium uptake. Millets significantly contribute to human and animal diets owing to their high levels of energy, calcium, iron, zinc, lipids, and high-quality proteins. In addition, they are also rich sources of dietary fibre and micronutrients. Proso millet is a rich source of vitamins and minerals such as iron (Fe), calcium (Ca), potassium (K), phosphorus (P), zinc (Zn), magnesium (Mg), vitamin B-complex, niacin, and folic acid. Proso millet contains essential amino acids in significantly higher quantities, except for lysine, the limiting amino acid. Millet is a good source of magnesium, phosphorus, protein and calcium. Spray millet, also called finger millet, is left on the stalk and provides a great treat for birds. It has an appealing texture and delicate taste, and satisfies a bird's need to forage by harvesting his own seed. Offering pet birds spray millet is ideal when young birds are being weaned, as the extra calories and protein help ensure healthy growth. Nesting birds can make use of the nutrition as well as stress relief when they are molting. A safe measurement of millet is about a teaspoon a day. It's a good amount for your budgie to eat as a nice treat without negatively impacting their diet.