Madame Plonk is the singer at the Great Tree and a Snowy Owl, Nyctea Scandiaca. Madame Plonk's sister is The Rogue Smith of Silverveil. Madame Plonk's first name is Brunwella. The Plonk's have been singers for generations all over the Northern Kingdoms. The position of singer at The Great Ga'Hoole Tree is an inherited position. She sings with the accompanimentof the grass harp and the Harp Guild, which is one of the most prestigious of the nestmaid snakes guilds of which Mrs. Plithiver is a member. She sings at twilight when the day turns to night and at dawn when night turns to day.