SongFunction_AvianBio_03262011

SongFunction_AvianBi - Bird Song and its Function Goals for todays class Review the goals of song in birds Put yourself in a birds shoes to

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Bird Song and its Function 2/22/2011
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Goals for today’s class Review the goals of song in birds Put yourself in a bird’s “shoes” to consider challenges to broadcasting song Apply this perspective to understand ambient selection pressures on birds’ songs
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First a bit of review: What is sound? Form of energy that causes molecules to vibrate Vibrating molecules produce a wave that transmits sound energy http://www.fearofphysics.com/Sound/dist.html 1 http://www.rockwool.com/acoustics/faq 1
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Form of energy that causes molecules to vibrate Vibrating molecules produce a wave that transmits sound energy http://www.fearofphysics.com/Sound/dist.html 1 http://www.rockwool.com/acoustics/faq 1 First a bit of review: What is sound?
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Form of energy that causes molecules to vibrate Vibrating molecules produce a wave that transmits sound energy http://www.fearofphysics.com/Sound/dist.html Amplitude 1 http://www.rockwool.com/acoustics/faq 1 First a bit of review: What is sound?
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Form of energy that causes molecules to vibrate Vibrating molecules produce a wave that transmits sound energy http://www.fearofphysics.com/Sound/dist.html Amplitude Frequency 1 http://www.rockwool.com/acoustics/faq 1 First a bit of review: What is sound?
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Spectrograms and waveforms allow us to visualize sounds Time (seconds) Frequency (kHz) Amplitude (kUnits) Lark Sparrow
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Time (s) Frequency (kHz) Mallard Duck http://www.dec.ny.gov/pubs/47642.html Units (measure of db) Spectrograms and waveforms allow us to visualize sounds Time (seconds) Frequency (kHz) Amplitude (kUnits)
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Song Sparrow : -9 hours singing -9 hours sleeping -6 hours foraging It’s key to the ecology of passerine birds
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SongFunction_AvianBi - Bird Song and its Function Goals for todays class Review the goals of song in birds Put yourself in a birds shoes to

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