The Bruxsa often takes the form of a bird during the night.
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The Bruxsa is from Portuguese lore and is a female vampire witch. She is described as being a beautiful woman in the day and leaves in the form of a bird at night looking for lost travelers or babies. She is able to have marry and have children and will eat them. She will attack and suck the blood from infants sleeping in their cribs and is hard to kill. Unlike many other witches, her choice to be evil is hers, rather than the cause of an accident or a birth defect. The Bruxsa is said to be immortal and has immense sorcerous powers. She is able to cause miscarriages, storms, droughts and disease. Garlic is a good repellent for the Bruxsa, and she cannot be killed by mortal means.

The Cressi Sorcerers were said to have the ability to shapeshift into wolves.

The Cressi Werewolf case took place in France, in the village of Cressi. Five sorcerers were put on trial in 1604 where the five admitted to witchcraft, sorcery, and shape-shifting into wolves to attend Sabbats. They kidnapped a boy, took him to one of the rituals, drank his blood, and killed him. They confessed to offering the boy to the devil, cut up his body, cooked him, and ate him. They said that they saved his fat for some potions and ointment. The five were burned to death.