For 5 months this year I have been leading trips to watch the pair of white-tailed eagles that are nesting in Tiroran Forest, Glen Seilisdeir on the Isle of Mull. There have been some memorable moments during that time: our two adults mating in a tree after the female had laid her first egg, the first sight of the downy white head of the chick after it had hatched, food being brought to the chick on the nest, aerial battles…