The legend of the days of the blackbird has its roots in Roman times when in the calendar the month of January still only contained 28 days. It has endless variations from place to place. But one thing is common to all legends, the dates.
According to a more elaborate legend, a blackbird hen with her splendid, snow white plumage was regularly scolded by January, a cold and shady month, who enjoyed waiting for her to come out of the nest in search of food to throw cold and frost to the earth.
Tired of this endless persecution, one year the blackbird decided to make provisions that would last for a month, and shut herself up for the whole month of January, which was then only twenty-eight days long.
The last day of the month, thinking to have outsmarted the wicked January, she left her hideaway and started singing to mock him.