Sorry for the crude headline although it's what I want to know! Just wondering if that could be the reason my normal sane mare went off like a bucking bronco yesterday when in proximity to three geldings, one of whom is a bit riggy? She's kept in a field with mares well away from all the geldings usually so maybe the excitement got too much for her?! I don't know what the signs of coming into season might be, other than squirting and mareishness. I haven't seen her squirt but that doesn't mean she's not, I suppose. Actually, she's been super-affectionate this week (other than bucking me off of course!)