Witches in the roof
In the outside of the city there is a picturesque village, for many years ago they lacked electricity service, they only have one power plant.
That is lit from 7 to 10 at night, the person in charge of lighting it is a very punctual old man, and shouting I am going to turn off the plant all to their houses.
One night they turned off the plant and a group of people decided to stay outside to talk, the night was cool and there were many stars in the sky.
When you hear a noise, and you see huge shadows on the roof of a house, black, in the shape of a bird, people shouted are witches, are witches.
People ran with fear, they stumbled and others looked for brooms to try to hit them, dogs barked.
They wanted to eat that from the roof, as they arrived mysteriously disappeared, every time the lord turned off the power plant at 10 o'clock at night, the witches appeared.
Image take of:
http://www.google.com/search?tbm=isch&q=brujas+reales&sa=X&ved=0ahUKEwjmwtTCufLaAhXGx1kKHe1TAfI4UBDVAgg1KAA#mhpiv=19&spf=1525656533820
http://www.google.com/search?q=brujas&tbm=isch&ei=i6vvWppfpPPmAu6dhqAM&start=40&sa=N#mhpiv=3&spf=1525656453089