I got my first mare 3 yrs ago. She was 5 and I could never tell when she was in season. She is very mild mannered. My other mare I have had for 1 1/2 yrs. She is 16yrs old and when she goes into season, every 3 weeks, for 5-7 days it is very obvious. She squirts constantly, spreads her legs, tenses her whole body, stands like a statue and you can't budge her. She is overly affectionate and wants to hug you with her head. She does not get bitchy at all. I moved them to a new barn in the beginnnig of the year and the 16 yr old did not go into season for almost 4 months, now she is back to every 3 weeks or so with the same tell-tail signs and my now 8 yr old is pms'ing.
Finally my question, is all this normal or is my 16 yr old over hormonal? Is my 8 yr old maturing? Is that why I am seeing irritability when she is in season now compared to 2 yrs ago? Any information on mares in season would be greatly appreciated.