I had a village with the population at the max, and i didn't pay much attention to it, because I had some of the people set to parenting, but they didn't do their job, and i ended up with about 50 people and all my females over 50. I was also trying to let the population thin out a bit, because there was a strain on the food supply, (they wouldn't fish unless I told them to.) By the time i was down to three villagers, there was an event, and one of the 75 year old females became pregnant! It looks like my vilage might have a chance after all!