Bee hive tool tip does not indicate negative effects

I was pretty astounded when I looked at my objectives and saw fully HALF of my poor beavers were stung. Worse when I found out their tiny faces swell up D: I've since googled my way to understanding they were stinging my beavers as they were walking a nearby path, so there are work arounds, but still. No where on the tool tip does it indicate that beestings will happen. Likewise, the yellow area of affect zone when you're placing the beehives down, for all other buildings that have it, are a kind of zone of positive things happening. I was quite surprised there was an unknown negative effect. And while this *maybe* seems self explanatory, because obviously bees can sting, I should say I grew up on a property with 6 bee hives and never once got stung... So... are these bees just hyper aggressive or what?