What is the reason why ostrich eggs are half empty?

The ostrich's eggs are half empty, which is the problem of the male. If the male is an old bird or a young bird, the eggs laid after pairing are likely to be half empty.

Ostrich eggs are white. Gently take out the eggs, put them in the sun and observe them in the sun. If you can see bloodshot, it means fertilization is successful. If it is black or white, it means that fertilization is unsuccessful and it will be thrown away immediately.