On the contrary, in my opinion, Myna is usually being kept soilitary. In this case, by doing so, they can mimic human voices. The are not that loud compared to macaws or cockatoos, but be aware they are messy eaters and messy poopers. Also, be aware that they are very prones to stress and could die because of it too .. just like chameleons. attached is my mynah.
Extremly talkative, and talks to himself all day.