<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr">“ <span style="caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); -webkit-text-size-adjust: 100%; background-color: rgb(255, 255, 255);">The flaps mimic a group of feathers, called covert feathers, that deploy when birds perform certain aerial maneuvers, such as landing or flying in a gust. Biologists have observed when and how these feathers deploy, but no studies have quantified the aerodynamic role of covert feathers during bird flight</span> “:</div><div dir="ltr"><br></div><div dir="ltr">https://www.sciencedaily.com/releases/2024/10/241028164339.htm</div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Sent from my iPhone</div></body></html>