qT=2&tQ=What is the largest known egg ever laid by a bird?&tC=Ostrich egg|A turkey egg containing 7 yolks|A platypus egg|An aepyornis egg&cC=4&fB=The largest known egg was that of the extinct Aepyornis bird of Madagascar.<br><br>The egg was 9.5 inches long and had a volume of 2.35 gallons.