The trumpet of swans

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Across
  1. 4. young swans
  2. 5. filled with wonder by the beauty of something
  3. 8. not deep
  4. 9. looked steadily
  5. 10. very excited
Down
  1. 1. very carefully
  2. 2. someone who enters without permission
  3. 3. moving at high speed
  4. 6. moved quietly in search of prey
  5. 7. surprised
  6. 8. observed in secret