White-winged Widowbirds
... that the nests of White-winged Widowbirds are built exclusively by males ?
... that the nests of <b id="mwDDY"><a class="mw-redirect" href="./White-winged_Widowbird" id="mwDDc" rel="mw:WikiLink" title="White-winged Widowbird">White-winged Widowbirds</a></b> are built exclusively by males <i id="mwDDg">(pictured)</i>?