European free-tailed bat
... that the European free-tailed bat can be recognised by the sound it emits in flight?
... that the <b id="mwDWM"><a href="./European_free-tailed_bat" id="mwDWQ" rel="mw:WikiLink" title="European free-tailed bat">European free-tailed bat</a></b> can be recognised by the sound it emits in flight?