Words with 'er', 'ir' and 'ur'

12345678910
Across
  1. 1. A person who works with a doctor
  2. 3. Where a clown works
  3. 6. Spread this on bread or crackers
  4. 7. Not a father
  5. 9. A animal's hair
  6. 10. An animal that can fly
Down
  1. 2. Not a madam
  2. 4. Not a brother
  3. 5. Mix red and blue for this
  4. 6. not a clear picture
  5. 8. Not him
  6. 9. A type of tree