The length of grass is critical to the success of the large blue as their food source, the Myrmica ants, thrive when the soil is warm. Shorter grass means warmer soils, more ants and hence more butterflies.
Over winter the 6 ponies have stayed on site to control the coarser vegetation. The site is looking great at the moment with a short sward, although with the dry warm spring so far if anything the danger is that the hill be warmed too much!
We are waiting for some rain before the cattle go briefly back on the slopes before being removed again by the start of June when the flight season begins.