crotala
...that in Greek mythology, Heracles chased off the man-eating birds of Lake Stymphalia by playing castanet-like clappers called "crotala"?
...that in <a href="./Greek_mythology" id="mwCjI" rel="mw:WikiLink" title="Greek mythology">Greek mythology</a>, <a href="./Heracles" id="mwCjM" rel="mw:WikiLink" title="Heracles">Heracles</a> chased off the man-eating <a href="./Stymphalian_birds" id="mwCjQ" rel="mw:WikiLink" title="Stymphalian birds">birds</a> of <a href="./Lake_Stymphalia" id="mwCjU" rel="mw:WikiLink" title="Lake Stymphalia">Lake Stymphalia</a> by playing <a class="mw-redirect" href="./Castanet" id="mwCjY" rel="mw:WikiLink" title="Castanet">castanet</a>-like clappers called "<b id="mwCjc"><a href="./Crotalum" id="mwCjg" rel="mw:WikiLink" title="Crotalum">crotala</a></b>"?