1. 啄木鳥   woodpecker   kingfisher   pheasant   pigeon   Hint Half-n-half Clue   2. 鳩   pigeon   cock   rooster   chick   Half-n-half Clue   3. 雄鶏   pigeon   rooster   pheasant   chick   Half-n-half Clue   4. キジ科の鳥   rooster   hen   pheasant   pigeon   Half-n-half Clue   5. 雛鳥   pigeon   chick   cock   woodpecker   Half-n-half Clue   6. 雄鶏   woodpecker   cock   chick   rooster   Half-n-half Clue   7. 雌鳥   woodpecker   pheasant   hen   rooster   Half-n-half Clue