The Thud Bird is an enemy in Grandia. It can be found on the Rainbow Mountain. Thud Birds may appear alongside Gill Newts and Crimsona and have the ability to cast Chain Kick and Egg Smash, Thud Birds also have the ability to Defend.
Thud Birds are extremely quick and allows them to maneuver around the battle screen quickly and will often interrupt attacks. Beware in field mode as Thud Birds can easily ambush players.