The walking route was dotted with flour from start to finish. The result of a Hash run through the nature reserve organized by the Hash House Harriers. Members (Hares) will lay a trail, which is then followed by the remainder of the group (the Pack or Hounds). The trail often includes false trails, short cuts, dead ends, and splits. These features are designed to keep the pack together regardless of fitness level or running speed, as front-runners are forced to slow down to find the "true" trail, allowing stragglers to catch up. I followed the trail this morning just for the fun of it and discovered a secret back area that has been cleared. Back at the main trail the Long-tailed Macaques were all out along the walk trail, they were attracted by the flour on the ground.These macaques have acquired the taste for flour. They were scooping up handfuls of flour and eating it (see the white mouth).I observed this behavior all along the trail, it seems the macaques have been conditioned to eat flour.The next troupe was at the Kallang Water Plant, they too were eating flour off the ground. Three troupes all exhibiting the same behavior. Will these macaques eventually become nuisances and raid homes in search of flour left in the open?