Heat and Humidity (+0
December 13, 2006: Migration Day 70
heat and humidity caused the 4th down-day in Terrell
County, GA. The next stop is about 60 miles away, but the headwinds
would mean about 2 hours of flying. Flying in warm, heavy air
is very hard work for the birds. Hear
why cold air makes flying easier.
Journal Question: Cold temps make easier flying
for birds, but what do cranes do if their legs get cold?
Look for clues in
the photo above. (See larger
view.) Joan Garland took the photo on cold Dec. 9. She said,
"It was hard to tell they were cranes because they had their
legs tucked up into their feathers to keep warm, instead of
straight out behind in the usual way they fly." Now imagine
you are a crane-kid in the photo. Write what it's like to fly
on a cold day. Do you like cool air or warm air best? Use Joan's
comment and Joe's
clip to add facts and details.
North is pleased to feature this educational adventure presented in
cooperation with the Whooping
Crane Eastern Partnership (WCEP). Copyright
2006 Journey North. All Rights Reserved.
Please send all questions, comments, and suggestions to our