The packs will scatter if anyone gets near them but the lone guys can get close or stay still and won't run away as easily. The picture next to one is the closest I could get, about 2 meters.
These guys are new over here, they recently migrated from the hills. Before it was very rare to see one but now It's happening on frequent basis. They live in the area so it's not rare to see them around or hear about people encountering them.