Usually Sept - Mar. Some goats, even some breeds do cycle outwith that time. Earliest mine been in season last week of August and latest 1st week of March. Can vary with weather I think mine did not start til November this year but I sponged ones I wanted to kid earlier as they did that last year only starting when herd matriarch started in Nov. Cycle every 3 weeks, in season for about a day.They make a lot of noise and wag their tail.