Across
- 4. lack of ___ to inflate & deflate the lungs
- 6. area well fertilization and male action happen
- 9. outer covering of body
- 13. kidney, ureters, cloaca section
- 15. x-ray look at their body
- 16. system that relates to food
- 18. applies to the front or head
- 20. skin, feathers, beak
Down
- 1. grinds up food particles
- 2. heart system of the body
- 3. they have nine of these
- 4. upper surface of the animal
- 5. lungs, nares, air sacs
- 7. moistens and stores food
- 8. high amounts of calcium
- 10. stomach of the bird
- 11. the tail or rear
- 12. hollow bones
- 14. relates to the lower and abdominal surface
- 17. foot or shank
- 19. used to eat and pick