Plants

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Across
  1. 4. this bird can flybackwards
  2. 7. the largest bird in the world
  3. 8. Birds are the only animals that have these
  4. 9. this bird cannot fly but spends 75% of its time underwater
  5. 12. a bird of preys sharp, hook-like toenails
  6. 14. large eyes and sensitive ears allow this bird to hunt at night
  7. 16. this is the state bird in seven US states
  8. 17. Benjamin Franklin wanted this to be the National bird
Down
  1. 1. the temperature classification of birds
  2. 2. a group of geese on the ground
  3. 3. birds evolved from these animals
  4. 5. this birds mimics the sounds of other birds
  5. 6. when birds move from one region to another according to seasons
  6. 10. this bird eats with its head upside down to strain water out of its food
  7. 11. this large, flightless bird is extinct
  8. 13. this bird is a scavenger
  9. 15. a bird of prey
  10. 18. the largest songbird in North America