Ostrich egg

Ostrich Egg

Ostrich eggs in a nest at an ostrich farm, South Pasadena, ca.1900

An ostrich egg is the largest of all eggs, laid by the ostrich, a flightless bird native to Africa. Ostrich eggs are notable for their size, strength, and unique uses in various cultures throughout history.

Description

Ostrich eggs are approximately 15 cm (6 inches) long, 13 cm (5 inches) wide, and weigh about 1.4 kg (3 pounds). The shell is thick and glossy, with a creamy white color. The shell's thickness, about 2 mm (0.08 inches), makes it extremely strong, capable of supporting the weight of an adult human without breaking.

Composition

The interior of an ostrich egg consists of a large yolk and a substantial amount of egg white. The yolk is rich in nutrients, containing proteins, fats, and vitamins. The egg white, or albumen, is also high in protein and serves as a protective layer for the yolk.

Incubation and Hatching

Ostrich eggs are incubated by both male and female ostriches. The incubation period lasts about 42 days. During this time, the male typically incubates the eggs at night, while the female takes over during the day. This shared responsibility helps protect the eggs from predators and environmental conditions.

Cultural Significance

Ostrich eggs have been used in various cultures for decorative and practical purposes. In ancient times, they were often carved, painted, or used as containers.

Ancient Uses

Vessel of ostrich eggs, gold, copper, Mycenaean 1400 BC

In ancient Mycenaean Greece, ostrich eggs were used as vessels and decorated with gold and copper. These artifacts highlight the importance of ostrich eggs in trade and art.

Religious and Symbolic Uses

Reliquary, Tournai, late 15th to early 16th century, ostrich egg, gilt silver

In medieval Europe, ostrich eggs were often used in religious contexts. They were sometimes mounted in churches as symbols of the resurrection and eternal life. The eggs were also used to create elaborate reliquaries, combining the natural beauty of the egg with precious metals.

Modern Uses

Today, ostrich eggs are still valued for their decorative appeal. They are often carved or painted and used as ornaments. Additionally, the eggs are consumed as a delicacy in some cultures, with one egg providing the equivalent of about 24 chicken eggs.

Art and Decoration

Artistic depiction of an ostrich egg, Syrian painter, circa 1335

Ostrich eggs continue to inspire artists and craftsmen. They are used in various forms of art, from intricate carvings to painted designs. The eggs' large surface area and durability make them ideal for artistic expression.

Related Pages

• Ostrich
• Egg (food)
• Bird egg