From the Vault: The Extreme Maneuverability of Hummingbirds, with Roslyn Dakin
Summary
Host Robert Lamb interviews Rosalind Dakin, a hummingbird researcher, about their extreme maneuverability and high metabolic rates. They discuss how power reserves dictate turning performance, territorial aggression, and spatial memory. The episode also covers recent findings on rapid beak evolution driven by human-provided feeders.
Topics discussed
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Intro: Hummingbird maneuverability and guest Rosalind Dakin
Hummingbird arrival, territorial behavior, and high metabolism
Anatomy of flight: Wing beats, muscles, and bone structure
Evolutionary history and diversification of hummingbirds
Acrobatic displays for territory and mating
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Measuring power: Load lifting assays in the lab
Linking power reserves to turning performance in flight
Frequency of max performance and muscle maintenance
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Handling hummingbirds and their aggressive interactions
Migration, memory, and tracking food schedules
Impact of feeders on beak evolution and range expansion
Courtship displays, size diversity, and coexistence
Outro, credits, and final sponsor messages
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