1. pato   flamingo   vulture   pelican   duck   Hint Half-n-half Clue   2. gorrión   duck   penguin   sparrow   quail   Half-n-half Clue   3. flamenco   swallow   parrot   chicken   flamingo   Half-n-half Clue   4. buitre   vulture   ostrich   dove   goose   Half-n-half Clue   5. pavo   turkey   swallow   vulture   eagle   Half-n-half Clue   6. cisne   swan   chicken   dove   ostrich   Half-n-half Clue   7. gaviota   owl   seagull   ostrich   swan   Half-n-half Clue