It could even be done by birdwatchers keeping a few extra records and observations when out watching birds. Over time they could build up data about the environment in a particular location, and this would also give people a better understanding of changes in the surroundings in which they live.
甚至只是鳥友賞鷹時額外的記錄、觀察，就能長久累積一地的環境資訊，人們也就能更瞭解自己生活環境的變化。