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• The Sound of Biodiversity — Nature includes some complex and interesting sounds, and a bird expert wants people to appreciate their beauty and importance. >>
• Learning to Sing — The complex vocalizations of songbirds are learned, not inherited. Some even have regional accents. Wrens, thrushes and other songbirds don't hatch with their impressive musical talents. They learn to sing their extensive repertoires by listening to others of their kind. >>
• Sensitive Songs — Climate changes might have tropical birds singing a different tune. Songbirds sing to attract mates and to defend territory. Signals from their surroundings tell the birds when the time is right to break into song. In northern latitudes, birds get the message as the days get longer in the spring. In tropical latitudes, the length of the day doesn't change much from one season to another, but birds get other cues from their environment. Those signals might get messed up as the Earth's climate changes. >>