Kiwis are the smallest of the flightless bird group, ratites. However, their eggs are the largest relative to body weight of any existing bird. To put this into perspective, the average kiwi weighs just 2500g and an average kiwi egg weighs a massive 371g. This is 15% of a kiwi's body weight . Their eggs are over 5.11 in (13 cm) wide and 6 in (15 cm) in length and weigh more than 3 lb (1.4 kg).
