Across
- 1. Lift allows larger birds to fly a long time without moving their _____.
- 5. Birds fly by flapping their wings or _______.
- 6. Big, broad wings provide maximum ____.
- 7. The main flight muscles are attached to the _________.
Down
- 2. The thin wings of falcons are built for _____.
- 3. Without ______ feathers, birds would be grounded.
- 4. Some birds can _______ through the air at 80 miles per hour.