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.
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.
The seagulls near me can recognise school children. They know they are more likely to pick up dropped food.
One hypothesis suggested that in early history, women may have more commonly caught smaller prey (birds) than men did, and this fear could be evolutionarily ingrained.
I’ll get my coat.
Another hypothesis given is sunscreen. If women wear sunscreen more often (such as on their face) and sunscreen reflects UV (and birds can see in the UV spectrum), then that could also explain it.