The visit was most informative in demonstrating the nature in which Beavers modify habitats to suit their own requirements.
The full report on the visit, including a vivid photographic record of the Beaver colony’s work in the area, can be viewed following this link: Beaver Colony Visit

Dr Ronald Campbell (in the water) below the first of the large dams built by the European Beavers on the Alyth estate;
Ronald is 5' 8".