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Yo! Yodel Studies Discussion
Try This! Be a Yodel Detective
Question 1: Which of these two yodels is probably made by a larger bird? Why do you think so? Flannery, the larger bird, is the one with the lower-pitched call. His is the second call.
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This call is by a loon
on Hemlock Lake. Listen to
the Hemlock Lake Loon (mp3 file) |
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This yodel is by a loon
on Flannery Lake. Listen
to the Flannery Lake Loon (mp3 file) |
These sonagrams,
produced by Jay Magers, are pictures of the sound of two loon yodels.
They show the frequency (how high- or low-pitched a sound is) on
the X-axis, and time in seconds on the Y-axis. The higher-pitched
a sound is, the higher the lines on the sonagram |
Question 2: Listen
to these three yodels. Look and listen for changes in pitch during the
yodels. Do these yodels come from more than one bird? How many birds?
These calls come from three different birds.
You can see and hear that there are changes in frequency (the pitch) as
the yodels progress in time.
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Question 3: Listen to
and look at these three yodels. Which is given by a different individual?
The first two yodels were given by the
same individual. Jay said, "Notice that the frequencies were the
same. Remember that one bird can choose how many repeat syllables they
can add to their yodel." The third yodel is given by a different
bird. You can tell because the frequency is different.
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Question 4: Now the big
challenge. Can you match each of these yodel sounds (Loon 1 - 4) to
their sonograms (Loon A - D)?
Loon 1 = Sonagram C
Loon 2 = Sonagram A
Loon 3 = Sonagram D
Loon 4 = Sonagram B
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Loon A |
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Loon B |
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Loon C |
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Loon D |
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Try This! Journaling Question: Female loons don't yodel, but they DO try to drive other females off territories. What are some ways females might signal their fighting ability?
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