This is what I found for Question #3
August 25, 1998
SCIENCE Q & A
The Largest Egg
By C. CLAIBORNE RAY
. What living animal lays the largest egg?
. The ostrich. According to the Provincial Museum of Alberta, it is about 2,000 times the size of the smallest egg, that of the hummingbird. An ostrich egg is about 180 millimeters, or 7 inches, long and 149 millimeters, or 5 and a half inches, wide, and weighs about 1.2 kilograms, or more than two and a half pounds.
The largest egg in relation to body size is that of the kiwi, which is about the size of a chicken, but has an egg about three times as big as an ordinary hen's egg.
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