How Big is an Ostrich Egg?

An ostrich egg is the largest of all bird eggs, typically measuring 6 to 7 inches (15 to 18 cm) in length and weighing around 3 to 5 pounds (1.4 to 2.3 kg).

Despite their size, ostrich eggs are relatively small compared to the bird’s body size, being about 1 to 2% of the female’s weight. The eggs have a thick shell, about 0.06 inches (1.5 mm) thick, which is strong enough to support an adult ostrich’s weight. Each ostrich egg can hold the equivalent of about 24 chicken eggs in volume.

These eggs are laid in a communal nest and take approximately 42 days to hatch.