To be suddenly overtaken by night, a sudden adversary. To walk on a dark night denotes grief, disappointment, loss. It is ominous to dream of night-birds, with the exception of the nightingale, which denotes joyful news to the dreamer, if a married woman, she will have children who will be great singers (Artemidorus). It is said that Jenny Lind’s mother dreamed of a nightingale.