Discrimination of

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Discrimination of within-island song variants
by Darwins finches
Jeff Podos Department of Biology University of
Massachusetts, Amherst
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Ratcliffe Grant (1985) Anim. Behav.
33290 Grant Grant (2002) Biol. J. Linn. Soc.
76545 Conspecific x heterospecific
songs Local x foreign (between-island) songs

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Ratcliffe Grant (1985) Anim. Behav.
33290 Grant Grant (2002) Biol. J. Linn. Soc.
76545 Conspecific x heterospecific
songs Local x foreign (between-island) songs

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• Ratcliffe Grant (1985) Anim. Behav. 33290
• Grant Grant (2002) Biol. J. Linn. Soc. 76545
• Conspecific x heterospecific songs
• Local x foreign (between-island) songs
• This study
• Local x foreign (within-island) songs?

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ISLA SANTA CRUZ
Isla Baltra
El Borrero Bay
Los Gemelos
El Garrapatero
Academy Bay
N
Tortuga Bay
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ISLA SANTA CRUZ
Isla Baltra
El Borrero Bay
Los Gemelos
L Local songs
El Garrapatero
F Foreign songs
Academy Bay
N
Tortuga Bay
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All males were banded and paired Most males
had active nests (eggs or chicks) Playbacks on
non-consecutive days Songs used were not from
test subjects
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Preferences for local dialects Simple
repertoires v Early song acquisition
v Structured dialects ? Limited
dispersal
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Preferences for local dialects Simple
repertoires v Early song acquisition
v Structured dialects ? Limited
dispersal
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Preferences for local dialects Simple
repertoires v Early song acquisition
v Structured dialects ? Limited
dispersal
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Preferences for local dialects Simple
repertoires v Early song acquisition
v Structured dialects ? Limited
dispersal
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PC2
PC1
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PC2
PC1
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Preferences for local dialects Simple
repertoires v Early song acquisition
v Structured dialects maybe Limited
dispersal ?
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Preferences for local dialects Simple
repertoires v Early song acquisition
v Structured dialects maybe Limited
dispersal ?
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ISLA SANTA CRUZ
Isla Baltra
El Borrero Bay
Los Gemelos
El Garrapatero
Academy Bay
N
Tortuga Bay
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Acknowledgments Sarah Huber Andrew
Hendry Luis de León Reyna Ana Gabela Colleen
Kennedy Charles Darwin Research
Station Galápagos National Park Service