A male American Golden-Plover proclaims its nesting territory with an aerial display known as the "butterfly flight." After flying up 50 feet, the plover switches to slow motion, raising its wings languidly until the wingtips nearly touch over its body, then lowering them gradually until they almost touch below – all the while calling. The plover sustains these slow and exaggerated wing-beats for nearly a minute – hanging in the air like an enormous butterfly.

More info and transcript at BirdNote.org. 

Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. 

BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.