Many people also believe that it is a mark of "respect" to the birds. Even if we don't understand the meaning of every call, if we want to enter the birds 'world we should first learn their language.
許多人更認為那是一種對鳥的「敬意」，即使不瞭解每一種叫聲的意義，要走進鳥的世界，應該先學習鳥的語言。