For the birds... Mystery Cache

Cache is NOT at posted coordinates.

Solve the bird-based crossword below and then enter the keyword into certitude for the final coordinates.

Across:

1.  Bird known for its long neck and wading in water
2. Brightly colored bird known for mimicking sounds
3. Large, flightless bird native to Australia
4. Bird that symbolizes peace
5. Bird famous for its nocturnal hoot
6. Small, agile bird often seen hovering
7. Bird that builds elaborate woven nests
8. Female chicken

Down:

9. Bird known for its fast flight and sharp talons
10. Bird known for its diving catches of fish
11. Group of owls
12. Young bird still in the nest
13. Bird famous for laying its eggs in other birds' nests
14. Colorful parrot often kept as a pet
15. National bird of the United States

You can validate your puzzle solution with certitude.