"...glaring at a series of diagrams showing an owl turning into a pair of opera glasses."
Hermione Granger studying this spell from Intermediate Transfiguration[src]

Owl to Opera Glasses (Strigiforma) is a Transforming spell that could be used to transform an owl into a pair of opera glasses.[2]


It was covered in Intermediate Transfiguration, a book studying transfiguration; a series of diagrams helped readers understand the spell.[2]

During the 1986–1987 school year, it was taught to Third year students in Transfiguration class.[1]

Hermione Granger read about this transfiguration while studying for her Ordinary Wizarding Level examinations in May of 1996 while discussing Professor Hagrid's request that they train his giant brother Grawp how to talk.[2]


From strigis, the genitive form of strix, the Latin word referring to the Screech Owl;[3] from forma, Latin for form or appearance. Also, in biology,[4] Strigiformes is the name of the taxonomic order that includes all owl species.[5]


Notes and references

  1. 1.0 1.1 Harry Potter: Hogwarts Mystery, Year 3, Chapter 7 (Jacob's Room) - Transfiguration Lesson "Owl to Opera Glasses" (see this image)
  2. 2.0 2.1 2.2 2.3 2.4 Harry Potter and the Order of the Phoenix, Chapter 30 (Grawp)
  3. Wiktionary - strix
  4. Wiktionary - forma#Latin
  5. WP favicon Owl on Wikipedia

Transfiguration (class)
Branches of Transfiguration Transformation · Vanishment · Conjuration · Untransfiguration
Known practitioners Circe · Emeric Switch · Falco Aesalon · Mirabella Plunkett · Thaddeus Thurkell
Professors Albus Dumbledore · Minerva McGonagall
Textbooks A Beginner's Guide to Transfiguration · Intermediate Transfiguration · A Guide to Advanced Transfiguration
Transfiguration spells studied at Hogwarts
Colour Change Charm (Colovaria) · Change of hair colour and style (Crinus Muto) · Hardening Charm (Duro) · Mending Charm (Reparo) · Reparifarge · Softening Charm (Spongify) · Switching Spell · Vanishing Spell (Evanesco)
Conjuring Spells Orchideous · Snake Summons Spell (Serpentsortia)
Transforming Spells Animal to Water Goblet (Vera Verto) · Beetle Buttons · Cat to Cauldron (Felifors) · Chair to cat · Guinea fowl to guinea pig · Hedgehog to pincushion · Match to needle · Meddling Man to Monkey · Mice to Snuffboxes · Owl to Opera Glasses (Strigiforma) · Porcupine to Pin Cushion (Hystrifors) · Small Child to Rat · Small Object to Dragon (Draconifors) · Snail to Teapot · Target to Bird (Avifors) · Target to Rabit (Lapifors) · Teacup to Rat · Teapot to tortoise · White Rabbits to Slippers