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Program Information Series 1 & 2
Click on a program in the right-hand column to see a description and program notes.
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Resonance Program Description Birds also use their air sacs as chambers to make the sounds they produce more resonant. Some even use their air sacs to make the sounds on their own. Program & Recording Notes
The recordings of both the blue grouse and sage grouse are
from the CD collection Bird Songs of California
produced by the Cornell Laboratory of Ornithology. |
Series 1
Series 2 |