Magpie
(see also animals)

All of the crow family - rooks, crows, ravens, magpies, and jays - are associated with hidden knowledge and foretelling the future. The well-known counting rhyme, applied in different variants to both magpies and crows, is an example of this:

One for sorrow, two for joy
Three for a girl, four for a boy
Five for silver, six for gold
And seven for a secret that can't be told.

As this rhyme makes clear, crows and their kin are augurs, keepers of secrets and mysteries.

There are no specific legends associated with rooks, but according to author Neil Gaiman, they do have one mystery. A group of rooks is known as a parliament, due to their habit of forming large assemblies during which one bird will seem to "speak" or orate at length. Afterwards, the bird is either left alone or torn to pieces. Gaiman claims that the lone bird is telling a story; the other birds' reaction is their form of criticism. Rooks and Crows - click here for more information on magpies and their relatives.

Joy, married bliss, sexual happiness - a happy emblem in the traditions of China where the cry of a magpie announced the arrival of friends, but in the West a bird linked with acquisitiveness, mischievous chatter and even witchcraft.  The magpie's fondness for bright objects seem to be the origin of its association with a Chinese custom by which a parted husband wife break a mirror and keep half each.  If either is unfaithful, their half of the mirror will turn into a magpie and fly back to tell the other.   From: Dictionary of Symbols (Tresidder)

  Songs referenced: 

Yes, Anastasia