Other than our donkey girls, the only other female in our little equine herd is our pony, Scarlet. Scarlet is Donnie Brasco's sister. Our males are all geldings (neutered) but Scarlet, of course, is not. Normally mares go through estrus (in heat) every 19 to 22 days from spring through autumn.
Some mares develop an attitude during these times. Some become very aggressive towards the males. I have never noticed this with Scarlet. I always knew that she had a cycle, but it was never evident to me.
Then yesterday, as I watched the herd out in the front pasture for their morning grazing, I witnessed, for the first time, Scarlet's seductive behavior.
As I watched, it was quite clear that the instigator was dear Scarlet.
As everyone grazed, she would race around them, bucking, and kicking up her heels, almost running into them.
She seemed particularly enamored with her brother, Donnie... and would run up to him and then turn her backside towards him. (Really, Scarlet... he's your brother!)
Luckily, the boys had no idea what was happening and graciously ignored her advances.