Elfin-woods Warbler
...that the Elfin-woods Warbler, an endemic bird of Puerto Rico first observed in 1968, is the last New World warbler to be discovered?
...that the <b id="mwAXY"><a class="mw-redirect" href="./Elfin-woods_Warbler" id="mwAXc" rel="mw:WikiLink" title="Elfin-woods Warbler">Elfin-woods Warbler</a></b>, an <a class="mw-redirect" href="./Endemic_(ecology)" id="mwAXg" rel="mw:WikiLink" title="Endemic (ecology)">endemic</a> <a href="./Bird" id="mwAXk" rel="mw:WikiLink" title="Bird">bird</a> of <a href="./Puerto_Rico" id="mwAXo" rel="mw:WikiLink" title="Puerto Rico">Puerto Rico</a> first observed in 1968, is the last <a href="./New_World_warbler" id="mwAXs" rel="mw:WikiLink" title="New World warbler">New World warbler</a> to be discovered?