4. Comparative Vocal Learning
189
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A) WILD ADULT
B) GROUP ISOLATE
C) SINGLE ISOLATE
seconds
kHz
kHz
kHz
Figure 4.10. Anna hummingbird song phrases. (A) Sonograms of the song from a wild adult, (B) a bird acoustically isolated with two other juveniles, and (C) a single isolate. Note the abnormal structure of the song from
the isolated birds. (From Baptista and Schuchmann 1990. Reprinted with permission from Blackwell WissenschaftsVerlag Berlin, GmgH.)
189
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1
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A) WILD ADULT
B) GROUP ISOLATE
C) SINGLE ISOLATE
seconds
kHz
kHz
kHz
Figure 4.10. Anna hummingbird song phrases. (A) Sonograms of the song from a wild adult, (B) a bird acoustically isolated with two other juveniles, and (C) a single isolate. Note the abnormal structure of the song from
the isolated birds. (From Baptista and Schuchmann 1990. Reprinted with permission from Blackwell WissenschaftsVerlag Berlin, GmgH.)