World's Largest Bird Unveiled
If you visited Madagascar before 1700 you would have been able to see giant birds that were as tall as a basketball hoop and weighed as much as an American alligator. These huge creatures were called aepyornis (pronounced ee-pee-OR-nis) or 'elephant birds'. Aepyornis means "the bird as big as a mountain" and they were named that by M.I.G. Saint-Hilaire.
Marco Polo, a Venetian explorer who lived in the 13th century, returned from an expedition to Madagascar to tell stories of the monstrous birds he'd seen. He called these flightless creatures 'elephant birds' because of their huge size.
By the early 1700s the last aepyornis had died. Science has determined that the probable cause for their demise was hunting by humans.
A Description
The aepyornis was a huge bird that was 10 feet tall and weighed in at around 1000 lbs. We will never know for sure what these birds looked like as there are very few descriptions available and no drawings. Their fossils have given us some insight to what they might have looked like and there have been several drawings created of what they may have looked like.They are the largest know bird to have lived on earth; and belong to the family of flightless birds called ratite. Like most other ratites, the elephant birds' breast bone had no keel. The keel anchors the strong muscles attached to the wings that other birds have that allows them to fly. Their forelimbs were modified wings.
Aepyornis were stout birds and very robust with a dinosaur like body. They had short, thick legs and large feet. The four-toed feet of the elephant bird indicate that were much more suited to stomping through dense forests than anywhere else. They had big heads and necks.
Native's history describes the aepyornis as a non-aggressive bird and it is portrayed as a shy, peaceful bird in their writings. The birds were grazers that fed on leaves from trees with no natural predators.
(Picture is from an article in the New Humanist by Richard Dawkins ... http://www.newhumanist.org.uk/volume119issue5_comments.php?id=P948_0_32_0_C)
More Information
- PALAEOBLOG: More Photos from ICVM 2007, Paris
- Palaeoblog is a blog giving the latest news about paleontology, dinosaurs, paleobiology, and related arts and sciences.
Gigantic Eggs
Aepyornis is special in that they laid the largest eggs known. Their eggs were even larger than the largest ones laid by dinosaurs. The eggs that have been found were up to three feet in circumference and 13-inches long. Scientists have calculated that the eggs were as large as they could be and still be functional. They were the largest single cells to ever have existed.Fossil hunters have found many of these eggs washed up on southern coastal sand dunes and peat deposits. The fossils found are often fragments of the egg, but occasionally they have found an entire egg with the bones of the embryos still inside (pictured here). The National Geographic Society in Washington has one on display. It was found by Luis Marden in 1967.
Size Comparisons: It would take 15 dozen chicken eggs to match the size of one aepyornis egg! Two gallons of milk would be needed to fill just one egg.
Where They Lived
Only the largest type of the aepyornis is known to have co-existed with humans.
In 1658 Madagascar's first governor, Étienne de Flacourt, said of them, "Vouropatra-a large bird which haunts Ampatres and lays eggs like ostriches; so that the people of these places may not take it, it seeks the most lonely places."
Aepyornis Stuff on Amazon
H.G. Wells Collected Science Fiction: The Time Machine & Stories of the Unusual (Unabridged)
Amazon Price: $18.35 (as of 07/26/2008)
