蜂鳥在拍打翅膀時，無論是向下拍打還是向上拍打，都會產生升力和聲音，從而產生穩定的音樂嗡嗡聲，而不是大型鳥類的脈動呼嘯聲。

Hummingbirds produce lift and sound on both the downstroke and upstroke of their wingbeats, creating a steady musical hum instead of the pulsing whoosh of larger birds.