This breed also has TWO breeding seasons, which is rare for goats, (most only have one) it's the Spring and Summer. So if you miss one breeding season you just wait for the second instead of having too wait for a year.
Nigerian Dwarves and Pygmy goats actually have a year round breeding season, not two breeding seasons. They go into heat at regular intervals during the entire year, unlike many other breeds which only experience heat cycles in the fall.