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Name_________________________ Worksheet The Life of Birds Date_________ The Life of Birds Episode 1 Questions: To Fly or Not to Fly 1. The Red-tailed Hawk used its superior speed and agility to prey on another animal of the skies. What was it? 2. Birds were not the first animals to fly. What animals preceded them and when? 3. Fossil evidence indicates that the first flying reptiles evolved 200 million years ago. What were they called? 4. What is believed to be the first bird to evolve and when? What evidence supports this theory? 5. What are some of the similarities and differences between Archaeopteryx and modern birds? Modern reptiles? 6. Scientists believe that feathers evolved from scales. What do these structures have in common? 7. What major evolutionary event reduced nose-weight and increased flight efficiency? 8. How has natural selection influenced the evolution of wings and flight? 9. Although fossil evidence has revealed that birds larger than man once existed, none remain. What is the largest bird in existence today? 10. Some bird species have become flightless. What are the advantages to this pattern of evolution? How are the feathers and feeding habits of flightless birds different from those that fly? 11. Why are so many species of flightless birds unique to New Zealand? Identify at least four of them. 12. Why do birds swallow stones or pebbles? AP Environmental Science Bethpage HS 1 Mr. Clark