thena
I read the hint LadyCFII mentioned, and I've put it below in a spoiler tag. If you want to, you can take a look.
Click to reveal..
'Advancements in medicine significantly increase longevity and fertility rates'. I guess that's your answer then! Upgrade your medicine.

I'm also guessing that it has a bit to do with luck. Since I upgraded all my tech to Lv.3 yesterday and saw a significant increase in twins (3 pairs overnight!) but no triplets. I'll keep you informed if I do get them.
horsecrazy123
That's sad! Hope you start your village again and keep us posted. Where were you originally up to?

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Cheers, Midii smile
Yay! My first set of triplets!