Although some might say that the purpose of all observation is to gather data, he decided to adopt the method that would cause the least disturbance to the birds, and keep his distance as a "peeping tom" (in the expression used by bird-watchers).
雖說觀察最終還是為了蒐集資料，但是他決定選擇干擾最小的方式，遠遠地當個鳥友戲稱的「偷窺者」。