Chapter 5
Screeching Owl is the final boss of chapter 5. He can be found after freeing the Tengu Mages in the Frost Castle.
Attacks
Screeching Owl does not have many attacks; his movements consist primarily of flying from perch to perch and shooting projectiles at you.
Defeating the Owl
To defeat the owl, follow him from whatever perch he lands on and attack him after he lands. His projectiles are blockable, so use your block maneuvers when he launches them. When he lands back on the main platform, you will be able to attack him freely. Repeat this process until he is defeated.
Rewards
After he is defeated, the owl will turn into a chicken and present you with a Purple Tengu Feather. This feather is used as an ingredient later in the game, to create the Kuji Disruptor Spell.