Estimating how many rabbits you are dealing with

The Modified McLean Scale is effective when dealing with large populations of rabbits that are leaving obvious signs such as buck heaps, burrows and rabbits visible and quantifiable. This scale may not be ideal for smaller blocks where the signs are not so obvious. Using a spotlight at night, count how many rabbits are within a beam of light, the acceptable level is half a rabbit per 1km within the light beam (count over a 100m distance and multiply by 10 to get a kilometre figure).