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Across
  1. 1. Strong, in bander’s terms
  2. 4. Inhaler instructions
  3. 9. Electric, stovetop, airborne
  4. 10. Different
  5. 13. Hollywood’s favourite eagle
  6. 17. A plant storage structure similar to a bulb, or, a social insect
  7. 19. Material comprising feathers
  8. 20. Notorious National icon
Down
  1. 2. Geography determined by color
  2. 3. Big in the sky, small in the stream
  3. 5. Migration autobahn
  4. 6. Formal feather
  5. 7. Layman’s accipiter
  6. 8. Well known park, where birds originated
  7. 11. This bird’s name shares an Arabic root word with the former prison Alcatraz
  8. 12. Cryptobiologists would
  9. 14. Birds don’t have them
  10. 15. Affixed to the avian order
  11. 16. By sound, progeny of pigeon and owl
  12. 18. Common occupation for a shrike