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22 Cards in this Set
- Front
- Back
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Why study bird song |
Model of vocal learning Without early input they have song and vocal issues |
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Auditory learning |
Young bird listens to and memories song of an adult |
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Sensory motor learning |
Rehearsal of a song memorized during auditory learning |
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Auditory learning time period |
15 to 35 days old |
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Sensory motor learning time period |
30 to 75 days |
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The brain pathways for vocal production and audition in humans VS birds |
Are very similar |
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Can study these thing sin birds to help understand how they work in humans |
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Spectrograms have shown this challenging part of studying bird song |
Huge variation Chickadee has just one call Brown thrashed has 3000 per individual |
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Information male listeners get from song |
1. Co specific recognition 2. individual recognition(dear enemy effect) 3. Is it an aggressive signal |
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Females listeners learn from songs... |
Conspecifics recignition Species recognition Does he sound like a good mate |
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Female songbirds use male songs to... |
Assess quality of potential mates |
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Song sparrows showed a higher aggressive response to.. |
Male songs from strangers VS neighbours Dear enemy effect |
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Bigger repertoire size of male correlates with. |
Mating success |
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Hermit thrush song |
Whistle introductory note followed by complex jumble |
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Hermit thrush repertoire |
6 to 13 |
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Hermit thrush song repertoire vary... |
With high and low frequencies geographically |
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Difference geographic location would make in song and species |
Lack of conspecifics recognition which leads to changes in mating patterns Reproductive isolation and speciation Dramatic differences between East and West lineages. Glaciers in BC separate them leading to speciation |
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Syntax |
Immediate variation, semi random order, alternation between high and low song types |
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Hermit thrush to local song |
Much higher physical response leading to differences in conspecifics recognition |
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In aggressive territorial situations male hermit thrush will... |
Drop their intro note instead if using soft songs |
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Is the dropping of the intro note a clue for.... |
The function? Perhaps longer range for mating with intro note. Doesn't break down easily as it travels through the forest |
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The ascending auditory pathway in a bird brain.... |
Traversed by incoming sound information |
