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The epaulets are not aerodynamic control surfaces like canards or flaps.
• They’re feather patches used for visual signaling, but can be moved independently.
• Any aerodynamic impact would be minimal and secondary, not functionally exploited for flight control.
That said, nature is full of hybrid functions, and it’s possible these features evolved in a way that leverages both display and minor flight modulation during aggressive or courtship flights.
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Source: ChatGPT 4o
Wow, I've never seen this. Great shot Marius. Do you know if the aerodynamic effect, if any, has been measured in a wind tunnel?
thank you, Edwin . dont know for this bird but when I saw it I was curious, will try and find out more
"Wind tunnel tests on red-winged blackbirds, also known as red-winged blackbirds (Ageladus phoeniceus), can provide valuable insights into their flight dynamics, maneuverability, and how they interact with each other in a flock. By studying the forces and moments experienced by the birds in controlled airflow, researchers can better understand their flight capabilities and use this knowledge to improve designs for aerial robots, according to Stanford Report. "