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Lecture_16-1 - full adult song is produced Subsong is much...

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Lecture 16 -Notes When we focus on songbirds, we focus on the passerines: Class: Aves, Order Passeriformes, Suborder Pesseri (“true songbirds”) How do birds acquire song? Complex bird song is not innate – it must be learned WHITE CROWNED SPARROW EXAMPLE So how is it learned? EVIDENCE FROM THE CHAFFINCH Must learn song, not innate Must be exposed at critical developmental period Will not learn song of another species When tutored after 1yr with song, will not learn that song In general, there is a sensitive period during the juvenile stage, a period where adults are silent, and a period of subsong (practice) the following season before
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Unformatted text preview: full adult song is produced. Subsong is much like child babble BERWICK’S WREN EXAMPLE SONG LEARNING GENERAL MODEL – ON BOARD Zebra finch is another well-studied model: Will only learn from a live tutor Different because sings full song within 3 months of hatch Won’t usually learn much after 65d of age If adults are absent juveniles learn from each other 4 possible learning patterns: 1. During both juvenile and young adulthood stages (chaffinch) 2. Only during juvenile stage (zebra finch) 3. During young adulthood only (catbird) 4. Open-ended learning (mockingbird, canary)...
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