Scientists set up a row of super-sensitive microphones and had various birds fly above them to record the sound created by their flapping. Owls are known for their silent flying abilities. See how they compare to other birds in this fascinating video.
About Jeffrey Mann
An early-30s birder living in San Antonio. Enjoys birding on the weekend, and loves checking out new areas in Texas for opportunities to photograph wildlife. When not obsessing about birds, you can find him cross-stitching or playing Nintendo games.