14 Birds Fly!
Today's flight was one hour and four minutes. That's longer than any previous flight, so the pilots watched closely to see if any birds were getting tired. Tired birds will want to drop out and land to rest. Watch the video (click "Watch It Now" under the photo at right). You'll see and hear the ultralight coming at you over the trees. Listen for its vocalizer playing the contact call. You'll see 3 birds; then one gets tired and drops away, but rejoins later. Do you see the three birds switch positions at the end of the clip?
How do the pilots know a bird is getting tired? Pilot Joe Duff has that answer in the audio clip below, but first take time to make your own predictions. How do they compare with Joe's answer?
Try This! Journaling Questions
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