Avian

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Across
  1. 5. has a beak that can't crack nuts
  2. 8. rheas and ostriches are these
  3. 12. bird with an invertebrate diet
  4. 14. air sacs are part of this system
  5. 18. a colourful UK species
  6. 20. a large bird cage
  7. 22. hummingbird diet
  8. 27. method of feeding
  9. 28. grinds up food
  10. 29. avian embryo
  11. 30. avian _________ bird flu
Down
  1. 1. avian ancestor
  2. 2. hammers on wood to mark it's territory
  3. 3. order of perching birds
  4. 4. enrichment involving realistic features
  5. 6. small parrot
  6. 7. bumblefoot
  7. 9. disease that can pass to humans
  8. 10. pouch to store food
  9. 11. body and wing feathers
  10. 13. _________ wire. A cheap type of mesh
  11. 15. type of flooring
  12. 16. end of the digestive system
  13. 17. another word for beak
  14. 19. lice and mites
  15. 21. Columba palumbus
  16. 23. member of the crow family
  17. 24. these keep birds warm
  18. 25. flightless seabird
  19. 26. ____________ yard. Outdoor raptor accommodation