1. 杜鹃   turkey   owl   cuckoo   chicken   Hint Half-n-half Clue   2. 鸡   parrot   dove   chicken   seagull   Half-n-half Clue   3. 鹅   goose   turkey   dove   vulture   Half-n-half Clue   4. 鹦鹉   chicken   parrot   duck   crow   Half-n-half Clue   5. 火鸟   stork   sparrow   flamingo   ostrich   Half-n-half Clue   6. 猫头鹰   goose   owl   stork   sparrow   Half-n-half Clue   7. 天鹅   peacock   quail   duck   swan   Half-n-half Clue