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Birdsong is a culturally transmitted mating signal: young birds learn specific variants of species-specific song(s) from conspecific models. Female song preferences are also learned early in life, but despite the potential functional implications of such learned mating preferences, we still have a poor understanding of when and from whom females learn. This also holds true for one of the foremost...
Although adaptive traits are commonly assumed to decline when the selection pressures favouring them become relaxed, behavioural adaptations against brood parasitism often persist for long periods in isolation from brood parasites. In cases where declines have been observed, it has been unclear whether the lower expression in parasite-free populations represents genetic change or is due to phenotypic...
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