english: These devices beat back and forth about 200 hertz during flight, and the animal can use them to sense its body rotation and initiate very, very fast corrective maneuvers.
non_english: Ovi mehanizmi se kreću napred i nazad brzinom oko 200 herca tokom leta i životinja može da ih upotrebi da oseti rotaciju tela i započne veoma, veoma brze manevre za korekciju.