In any case, my late bloomer is blooming. I watched today as Loki "acted bucky" for the first time in my observations.
Intact male goats have sexual behavior much the same as moose or deer, but all the more obvious because they are kept where we can see them all the time. Most of a buck's behavior is urine related -- smelling either his own or a female's, curling his top lip up, and sometimes assuming almost a show dog stance. Curley even will voice an open-mouthed, repetative grunt noise.