Comment by shared4you

Yes, Telugu is my mother-tongue and Kannada is my first-language. In spoken Telugu today, 'amma' is far more common than 'talli'. In written Telugu, both are equally common. 'talli' has secondary meaning of just refering to any female. For example, "chitti talli" (little girl), "talli-tandrulu" (mother-father, i.e., parents), etc. Similar remarks apply to Kannada. Avva is informal and more common in rural dialects.