White-breasted Robin
...that one egg laid in a clutch of two by the White-breasted Robin of Western Australia is much paler than the other?
...that one <a class="mw-redirect" href="./Egg_(biology)" id="mwEWo" rel="mw:WikiLink" title="Egg (biology)">egg</a> laid in a clutch of two by the <b id="mwEWs"><a class="mw-redirect" href="./White-breasted_Robin" id="mwEWw" rel="mw:WikiLink" title="White-breasted Robin">White-breasted Robin</a></b> of <a href="./Western_Australia" id="mwEW0" rel="mw:WikiLink" title="Western Australia">Western Australia</a> is much paler than the other?