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The large size of elephant bird eggs means that they would have required substantial amounts of calcium, which is usually taken from a reservoir in the medullary bone in the femurs of female birds. Possible remnants of this tissue have been described from the femurs of A. maximus.
The large size of elephant bird eggs means that they would have required substantial amounts of calcium, which is usually taken from a reservoir in the medullary bone in the femurs of female birds. Possible remnants of this tissue have been described from the femurs of A. maximus. [13] Aepyornis eggs, Muséum national d'Histoire naturelle, Paris
Egg size tends to be proportional to the size of the adult bird, [citation needed] from the half gram egg of the bee hummingbird to the 1.5 kg egg of the ostrich. Kiwis have disproportionately large eggs, up to 20% of the female's body weight. [ 18 ]
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Ostrich eggs in a nest on a farm. The egg of the ostrich (genus Struthio) is the largest of any living bird (being exceeded in size by those of the extinct elephant bird genus Aepyornis). The shell has a long history of use by humans as a container and for decorative artwork, including beads. The eggs are not commonly eaten.
Aepyornis maximus skeleton and egg. Aepyornis maximus (the giant elephant-bird) was a giant flightless bird that lived in Madagascar. It became extinct probably in the 17th or 18th century; it is thought that it was hunted excessively by humans. The bird was more than 2 metres (6 ft 7 in) tall, and its egg weighed about 10 kilograms (22 lb).
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A biologist at Midway Atoll National Wildlife Refuge noted that Wisdom the bird still 'seems to still have the energy and instincts for raising another chick'