Avian Biology

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Across
  1. 1. Breaks down plant matter
  2. 3. Provides the force for the down stroke in flapping
  3. 6. The developing chick and main source of nutrients
  4. 8. Longest section of the oviduct
  5. 9. Funnel shaped opening at the start of the oviduct
  6. 12. The true stomach and uses chemical digestion to break down food
  7. 13. A muscular organ used to grind food with grit
  8. 14. specialised for different diets
Down
  1. 1. A storage organ can produce milk
  2. 2. bone used to move air around
  3. 4. allows birds to produce two sounds at once
  4. 5. air flows differently
  5. 7. helps pump air through the system
  6. 10. Main chamber for shell deposition
  7. 11. The everything hole