Across
- 5. Dormancy, Overwinter
- 7. Aggressive, Combative
- 10. Flying reptile, Winged lizard
- 11. Wintry, Frosty
- 12. Classification, Categorization
- 13. steady flow, running
- 15. Micrometer, Millionth of a meter
- 17. Money, Legal tender
- 18. Bird expert, Avian researcher
- 20. Miniature world, Small-scale representation
- 21. Pre-war, Before conflict
Down
- 1. Wing-flapping aircraft, Bird-like flying machine
- 2. Single-colored, One-hued
- 3. Animal stuffing, Mounting
- 4. Bird study, Avian science
- 6. Hostile, Antagonistic
- 8. Chopper, Whirlybird
- 9. Sentence structure, Grammatical arrangement
- 14. Recurring, Repeated
- 16. Genetic carrier, DNA package
- 19. Spherical bacteria, Coccus