Wild population increase/decrease fluctuations

[Verranicus]

So, I'm not sure if this is part of the mod or not, but a couple of my settlements keep jumping between +12.5% population and -5% to -14%. There's no plague, it's just totally random.

[Mikail Mengsk]

Mmh i remember something similar back in old games. Maybe special events like the faires? Annual Harvest fluctuation? Change of governors?

[Werebear]

harvest

[odyseusz79]

Population change has to do with the harvest, as has already been said, and also with what kinds of farms and/or fisheries you have. Basically, good harvest + advanced farms = huge population growth; good harvest + no farms = smaller pop growth.

[Verranicus]

Except I've had nothing but good harvests so far, and the population will still inexplicably swing to -10% for a few turns, giving me no reason.