ネッタイバン Gallinula tenebrosa

Dark waterhen with white edges to the under tail. Bill and forehead shield are primarily red with a yellow tip. Juvenile and non-breeding adult may be confused with other species due to their less colorful bills, which may appear primarily dark. Occurs in a wide variety of wetland habitats and is a common sight in urban parks. Typically fairly vocal, produces a wide array of shrieking sounds.