Canary Transfiguration Hex

The Canary Transfiguration Hex temporarily changes someone into a giant canary. After a few moments, the Transfigured person molts back into themselves.

References from the canon

• Fred and George placed this hex on seemingly innocent custard creams so that whomever ate one was changed temporarily into a huge canary. Neville ate one of these Canary Creams, much to the amusement of everyone in the Gryffindor common room (GF21).