Richard Adams shows a detailed knowledge of the natural world in which the rabbits live, specifically the English countryside. "Watership Down" is an actual hill in Hampshire, near the village of Kingsclere, just a few miles away from the area in Berkshire where Richard Adams grew up. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.