Bwisagu is the major festival of Bodo tribes of Assam in Northeast India. This festival is celebrated in the mid of month April, during the time of Bohug Bihu. Bodo tribes is one of the largest scheduled tribes of Assam. These tribes is mostly found in the district of Kokrajhar, Chirang, Baksha, Udalguri etc.
This festival is one of the famous and cherished festival of the Bodo tribe. This festival is celebrated as the springtime festival and to welcome the new year of the tribe. The first day of the festival is worshiping the cows same as the Bohug Bihu celebrated by the people of Assam. On the next day younger people offer prayer to the elder one of the family. Bwisagu is a festival of joy.
On the next day of the festival people also offer prayer to the "Lord Bathou"(The Sijou Plant) or Lord Shiva by offering Chicken, Zou (Rice Beer) etc.
During this festival the attractive dance of the Bodo community called the "Bagurumba" dance is performed. The purpose of the dance is offer prayer to the Bodo's supreme God Bathou from whom The Sijou Plant is symbolized. Only Girls are performed in this Dance. Girls wear Dokhnas (Draped Skirts) Chaddar (Clothes use as a bodice) and Jhumra (Shawl) during performing the dance. Dokhnas is the traditional dress of women of these tribes. During this dance performance man plays the musical instrument Serja (a bowed instrument), Sifung (Flute), Tharkha (a piece of split bamboo) and Khum (a long drum made of wood and goat skin). This festival take places mostly in Bathou temples where everyone can join and enjoy.