Long-tailed Finch
... that a male Long-tailed Finch is unable to tell the sex of an unfamiliar Long-tailed Finch on sight alone?
... that a male <b id="mwEeE"><a class="mw-redirect" href="./Long-tailed_Finch" id="mwEeI" rel="mw:WikiLink" title="Long-tailed Finch">Long-tailed Finch</a></b> <i id="mwEeM">(pictured)</i> is unable to tell the sex of an unfamiliar Long-tailed Finch on sight alone?