Where does this come from, and can I check it?

One egg weighs about 1.4 kilograms, equal to two dozen hen eggs. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Records & Extremes shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

An ostrich egg is the largest laid by any living bird

One egg weighs about 1.4 kilograms, equal to two dozen hen eggs

Ostrich eggs measure around 15 centimetres long with a shell thick enough to support an adult's weight if stood on end. A single egg holds roughly the volume of two dozen chicken eggs, and a clutch can contain a dozen of them. The ostrich itself is also the largest living bird.

Ostrich egg (left) & elephant bird egg (right) — James St. John · CC BY 2.0 · licence · source

Where this comes from

Encyclopaedia Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: birds, eggs, ostrich

An ostrich egg is the largest laid by any living bird: the short answers

Where does this come from, and can I check it?: One egg weighs about 1.4 kilograms, equal to two dozen hen eggs. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a records & extremes fact?: Yes. It sits on the Records & Extremes shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.