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Home > Meet Our Animals > Reptiles > Turtles > Aldabra tortoise
Aldabra tortoise
Aldabrachelys gigantea
 
Size Carapace length averages 35-40 inches with females being smaller than males.
Weight The average weight of males is 400 lbs. The females average around 300 lbs.
Conservation Status On the 2010 IUCN Red List of Threatened Species, the Aldabra tortoise is listed as Vulnerable.
Diet Aldabra tortoises are primarily herbivorous. In the wild the tortoises mostly consume grass and other plant material; although they do occasionally feed on carrion when they find it. At the Zoo, the tortoises are offered a salad of mixed greens, fruits and vegetables. A powdered supplement is added to the salad to ensure the tortoises receive all the nutrients they require. In the summer the tortoise diet is augmented with watermelon, strawberries and other seasonal fruits and vegetables.
Geographic Range Aldabra Atoll in the Western Indian Ocean.
Where to find me in the Zoo Reptile and Amphibian House
Note: Description below should include Longevity, Behavior, and Reproduction information
Large carapace (top shell) is a brownish gray. Body covered in scales that are dark gray. Head is pointed and wedge shaped, unlike the Galapagos tortoise which has a wider, blockier head.

Longevity

Known to live more than 100 years with some reports that they can live in excess of 200 years!


Behavior

This large, terrestrial tortoise can be found in a wide variety of habitats including grasslands, scrub areas, and swamps. They are mainly active during the day but will seek shelter from the midday sun under bushes and trees. Primarily hebivores they eat shrubs, grasses, leaves, and herbs. This species was near extinction at the turn of the 20th century but conservation efforts have helped the population to increase, although they still remain vulnerable.


Reproduction

Mating takes place between Februrary and May. When the female is ready to lay she will dig a nest in the soil and lay between 10-25 eggs. Hatching will take place from early October through mid-December.
 
Bubba: Male, hatched in the wild in the Aldabra Atoll. Hatch date unknown, arrived at the Zoo on May 7, 1947.

Pebbles: Female, hatched in the wild in the Aldabra Atoll. Hatch date unknown, arrived at the Zoo on May 31, 1968.

Wilma:
Female, hatched in the wild in the Aldabra Atoll. Hatch date unknown, arrived at the Zoo on June 9, 1971.

Betty: Female, hatched in the wild in the Aldabra Atoll. Hatch date unknown, arrived at the Zoo on June 9, 1971.

Grunt: Male, hatched in the wild in the Aldabra Atoll. Hatch date unknown, arrived at the Zoo on August 6, 1986.

Tweedle Dee:
Female, hatched in the wild in the Seychelle Islands. Hatch date unknown, arrived at the Zoo on September 20, 1990.

Tweedle Dum: Female, hatched in the wild in the Seychelle Islands. Hatch date unknown, arrived at the Zoo on September 20, 1990.

Enrichment

Adoption Information

Featured Foster Parent

Sources: 1) Philadelphia Zoo staff; 2) Ernst CH, Barbor RW. 1989. Turtles of the World. Washington (DC): Smithsonian Institution Press.p. 250-251; 3) Gerlach J. 2004. Giant Tortoises of the Indian Ocean. Lanesboro (MN): Zoo Book Sales. p. 14; 4) IUCN 2010. IUCN Red List of Threatened Species. Version 2010.4. . Downloaded on 03 February 2011.