Bu is the trumpet shell, Syrinx aruanus. Bu Thonar is the season when the trumpet shell constellation, Delphinus (the Dolphin), comprised of five main stars, rises high in the night sky. It is Kuki season where the winds blow from the north-west, starting in January and ending in April. This season is also marked by the appearance of Dogai, a female ghost constellation made up by Altair (Alpha Aquilae), Beta and Gamma Aquilae.