動物たちは何をしゃべっているのか？(What do animals talk about?)

少し高かったけど前から読みたくて買って読み終えた本。鳥の鳴き声の意味が詳少しわかった。 (The book was a bit expensive but I had wanted to read it for a while and bought it and finished it. I now understand a little more about the meaning of birdsong.)