Jorinda and Joringel

from The Brothers Grimm:

"...There was once an old castle in the midst of a large and thick forest, and in it an old woman who was a witch dwelt all alone. In the day-time she changed herself into a cat or a screech-owl, but in the evening she took her proper shape again as a human being.

She could lure wild beasts and birds to her, and then she killed and boiled and roasted them. If any one came within one hundred paces of the castle he was obliged to stand still, and could not stir from the place until she bade him be free.

But whenever an innocent maiden came within this circle, she changed her into a bird, and shut her up in a wicker-work cage, and carried the cage into a room in the castle. She had about seven thousand cages of rare birds in the castle..."