"The guinea-fowl they had been changing into guinea-pigs had been shut away in a large cage on Professor McGonagall's desk (Neville's still had feathers)..."
—After a class on this spell[src]

Guinea fowl to guinea pig is a Transforming spell that is covered in fourth year Transfiguration classes at Hogwarts School of Witchcraft and Wizardry. Neville Longbottom was not particularly skilled with these spells.[1]

Behind the scenes

  • In the french translation, this spell is practised on turkeys instead.


Notes and references

  1. Harry Potter and the Goblet of Fire, Chapter 22 (The Unexpected Task)

Transfiguration (class)
Professors: Albus Dumbledore · Minerva McGonagall
Textbooks: A Beginner's Guide to Transfiguration · Intermediate Transfiguration · A Guide to Advanced Transfiguration
Known practitioners: Emeric Switch · Circe · Falco Aesalon · Mirabella Plunkett · Thaddeus Thurkell ·
Transfiguration spells studied at Hogwarts: Chair to cat · Match to needle · Snail to Teapot · Teacup to Rat · Switching Spell · Transforming Spell · Avifors Spell · Mice to Snuffboxes · Beetle Buttons · Rabbit Slippers · Vera Verto · Teapot to tortoise · Draconifors Spell · Lapifors Spell · Vanishing Spell · Owl to opera glasses · Guinea fowl to guinea pig · Hedgehog to pincushion · Small Child to Rat · Meddling Man to Monkey · Crinus Muto
Branches of Transfiguration: Transformation · Vanishment · Conjuration · Untransfiguration