1. 雕   dove   swallow   vulture   chicken   Hint Half-n-half Clue   2. 企鹅   cuckoo   eagle   penguin   dove   Half-n-half Clue   3. 鸡   flamingo   cuckoo   crow   chicken   Half-n-half Clue   4. 乌鸦   crow   pelican   seagull   dove   Half-n-half Clue   5. 鹌鹑   chicken   pelican   quail   turkey   Half-n-half Clue   6. 驼鸟   eagle   ostrich   vulture   dove   Half-n-half Clue   7. 火鸟   vulture   peacock   swan   flamingo   Half-n-half Clue