Yeah, WW, Kiwi eggs are about 1/3 (one third!) of the female Kiwi's weight (averages here, of course) it would be about the same as a human, let's say average weight if 100 lbs, giving birth to a 30 to 35 lb baby!

I once, in very short passing, weighed 100,(on my way to a larger size) but my children, when born, were "big"-- my son was 9 lbs, my daughter, 9lbs, 15 ounces.(both were 24 inches long--so they were big, not just well padded!) Not even 10% of my weight.

i feel very sorry for the poor momma kiwi who has to lay an egg that big!