Lancashire Legends, Traditions…
“ We are often told that whatever kind of weather we have on a Friday we shall have similar weather on a Sunday,—"sic a Friday sic a Sunday," is known as an item of weather-wisdom both in the north of England and in Scotland. When rooks return to their roosting places in groups, they are said to be "coming home," and rain is expected soon to follow. Horses, cows, and sheep always make for the hedges, and stand with their tails to the wind when rain is about to fall. If bats are seen during the day, warm weather is predicted ”
