I had gotten down to 5 women, none pregnant. I went to bed with the game on 1/2 speed. When I got back on ~ 24 hrs later, down to 3 women!

Then suddenly! a male and female of breeding age drop down the waterfall!

This was the second time I had gotten down to 5 women and on the first round they all eventually died of old age, with no event to save them. This time, I think I can get enough children going to keep them around for a while.

Lessons learned:
- Don't give up! Even if it looks hopeless
- Don't go away from your game too long on 2x speed
- Be nice to the men...can't go too long without them