When winter begins, pengulls start jumping out of the ocean and assume a random spot in the world as their breeding ground. That spot has thin layer of ice and is marked on the map. But when the next winter starts, pengulls don't seem to repopulate all their previously inhabited spots. It might have been because the last time they were there they were exploded by some gunpowder.
Do these pengull spots rotate each winter, or do they only not repopulate locations that have proven to be bad in the past?