I wonder if this is due to relative vigilance of men and women. This study observed that women tend to scan their environment much more than men: https://news.byu.edu/intellect/study-visually-captures-hard-...

I’ve observed that animals are pretty good at reading body language and can tell when they’re actually being seen by, rather than just sharing space with, a human.

Birds also tend to be reactive to forward facing pairs of eyes (because raptors, especially owls), so that would make sense.

Beyond that, women are on average more likely to wear clothing or hair that flaps around. Or heels that make loud noises when they walk.

[dead]