passenger pigeons
... that in 19th-century America, any amateur hunter could kill six passenger pigeons in a single shot ?
... that in 19th-century America, any amateur hunter could kill six <b id="mwAjY"><a href="./Passenger_pigeon" id="mwAjc" rel="mw:WikiLink" title="Passenger pigeon">passenger pigeons</a></b> in a single shot <i id="mwAjg">(shooting pictured)</i>?