ABSTRACT
Even within suitable habitat, the grasshopper’s distribution is limited by its low vagility (the ease with which it can spread). This is the result of complex social behaviour, rather than an inability to fly well. Females are fairly sedentary, at least in mountain areas, while males make mainly short, spontaneous flights within a limited area. The two sexes together form tightly knit population clusters within areas of suitable habitat. The clusters are held together by visual and acoustic communication displays.
