Raphus cucullatusdodo

Ge­o­graphic Range

Dodo birds were once the in­hab­i­tants of Mau­ri­tius, a small, oys­ter-shaped is­land which lies ap­prox­i­mately 500 miles east of Mada­gas­car. (Bri­tan­nica, 1986)

  • Biogeographic Regions
  • indian ocean

Habi­tat

Al­though many pic­tures and sto­ries place the dodo along the shores of Mau­ri­tius, it was ac­tu­ally a for­est-dwelling bird. The is­land of Mau­ri­tius is home to a va­ri­ety of bio­mes, such as plains, small moun­tains, forests, and reefs all along the shores. How­ever, the dodo made its home pri­mar­ily in the for­est. (Fuller, 1987; Bri­tan­nica, 1986)

  • Aquatic Biomes
  • reef

Phys­i­cal De­scrip­tion

Our pre­sent day knowl­edge of what the dodo looked like is based on sev­eral sources. There are ac­counts from the di­aries and writ­ings of the sailors and cap­tains who landed on Mau­ri­tius in the 16th and 17th cen­tury, draw­ings from the few hu­mans who were able to wit­ness them alive (al­though, it can't even be proven that all the artists who ren­dered the dodo ever ac­tu­ally saw one). There are a few fos­sils ex­ca­vated from the is­land, which are kept at the British Mu­seum, and a foot and a beak which are pre­served at Ox­ford, but there are no com­plete stuffed spec­i­mens (mod­els in mu­se­ums are based on par­tial re­mains). From these records and pic­tures, sci­en­tists and or­nithol­o­gists have pieced to­gether a fairly de­tailed com­pos­ite of the dodo.

The dodo was a large, plump bird cov­ered in soft, grey feath­ers, with a plume of white at its tail. It had small wings that were far too weak to ever lift the dodo off the ground. Be­cause it was flight­less, those who saw the bird often thought it had no real wings at all, de­scrib­ing them as "lit­tle winglets." Study of the skele­ton re­veals, how­ever, that the dodo did in fact have wings that were sim­ply not used for flight, much like pen­guins' wings. The dodo's legs were short and stubby and yel­low in color. On the end of the legs were four toes, three in front and one act­ing as a thumb in back, all with thick, black claws. The head was a lighter grey than the body, with small, yel­low eyes. Many words have been de­voted to the long, crooked and hooked beak, which was light green or pale yel­low in color and was one of the most dis­tin­guish­ing fea­tures of the dodo. Those who saw it, mar­veled at the unique shape and size. One wit­ness went so far as to de­scribe it as grotesque. (Strick­land and Melville, 1848; Fuller, 1987; Green­way, 1958; Bri­tan­nica, 1986)

  • Range mass
    13000 to 23000 g
    458.15 to 810.57 oz

Re­pro­duc­tion

Specifics about mat­ing and in­cu­ba­tion pe­ri­ods are not known. Sev­eral peo­ple have de­scribed the nests the dodo made as being deep in the for­est, in a bed of grass. There, the fe­male would lay one egg, which she would pro­tect and raise. One sailor told about hear­ing the cries of a young dodo in its nest, which sounded "like that of a young goose." (Fuller, 1987; Green­way, 1958)

Be­hav­ior

The sailors who landed on Mau­ri­tius found much amuse­ment in watch­ing the clumsy dodo's be­hav­ior. There is a story one told of watch­ing a dodo at­tempt to es­cape in a hurry. When it tried to run away, (wob­ble may be a more ac­cu­rate term), its belly would drag on the ground and slow him down. But for the most part, the dodo is de­scribed as a lazy, rather dumb an­i­mal. It had vir­tu­ally no de­fenses against preda­tors, ex­cept for its large beak which could deliever a "fear­some bite" if the oc­ca­sion arose, such as a threat to it­self or its young. (Fuller, 1987; Strick­land and Melville, 1848)

Com­mu­ni­ca­tion and Per­cep­tion

Food Habits

Sci­en­tists thoughts on the diet of the dodo are based mainly on spec­u­la­tion. Some sailors' ac­counts talk of watch­ing dodos wade into wa­ter-pools to catch fish. They have been de­scribed as "strong and greedy" hunters. What re­ally fas­ci­nated the vis­i­tors to Mau­ri­tius, how­ever, was the fact that dodos seemed to eat stones and iron fre­quently and with no trou­ble. It is now sur­mised that the rocks eased di­ges­tion. (Strick­land and Melville, 1848; Fuller, 1987)

Eco­nomic Im­por­tance for Hu­mans: Pos­i­tive

The main pur­pose dodos served to hu­mans, in the brief con­tact be­tween the two species, was as food. The sailors fre­quently fed on wildlife from Mau­ri­tius while stay­ing there, al­though it has been said that dodo meat was not par­tic­u­larly tasty. Still, they were hunted in­tensely, with sailors some­times bring­ing back as many as 50 at a time. What they couldn't eat right away they would salt and bring back with them.

A few at­tempts were made to bring back a dodo alive. When this was sucess­ful, en­tre­prenuers would cap­i­tal­ize on the unique looks of the bird and tour the dodos around Eu­rope, dis­play­ing them in cages and demon­strat­ing how the dodo could "eat" stones. (Strick­land and Melville, 1848; Fuller, 1987)

Con­ser­va­tion Sta­tus

The first group of sailors be­lieved to have ar­rived on Mau­ri­tius were Por­tuguese, led by Cap­tain Mas­careg­nas, in 1507. They had in­tended to land on the Cape of Good Hope in South Africa, but stormy con­di­tions had blown them off course and they ended up find­ing respite on Mau­ri­tius. Sev­eral other ex­pe­di­tions, Por­tuguese, Dutch, British and oth­ers, made stops at the is­land in the fol­low­ing years. In the dodos, the sailors found amuse­ment and, when they were run­ning out of sup­plies, food.

The Dutch col­o­nized Mau­ri­tius in 1644 . Along with groups of peo­ple, the ships brought cats, dogs, swine and some­times mon­keys. These an­i­mals quickly in­vaded the woods, tram­pling the nests and fright­en­ing the birds. These do­mes­tic crea­tures also de­voured the dodo eggs and young. The in­ter­fer­ence of the for­eign an­i­mals cou­pled with the con­tin­ued overuse of the birds for food led to its total ex­tinc­tion by 1681. (Strick­land and Melville, 1848; Bri­tan­nica, 1986)

Other Com­ments

There are two spec­u­la­tions on where the name for the dodo came from. The more ac­cepted source is the Dutch word "dodoor" which mean "slug­gard." This word de­scribes both the dodo's looks and ap­pear­ance. The other spec­u­la­tion is that the name comes from the Por­tuguese word "doudo" which, mean­ing fool­ish or sim­ple. (Strick­land and Melville, 1848)

Con­trib­u­tors

Brit­tany S. Brown (au­thor), Uni­ver­sity of Michi­gan-Ann Arbor.

Glossary

acoustic

uses sound to communicate

bilateral symmetry

having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.

chemical

uses smells or other chemicals to communicate

endothermic

animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.

forest

forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality.

iteroparous

offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).

motile

having the capacity to move from one place to another.

native range

the area in which the animal is naturally found, the region in which it is endemic.

oviparous

reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body.

reef

structure produced by the calcium carbonate skeletons of coral polyps (Class Anthozoa). Coral reefs are found in warm, shallow oceans with low nutrient availability. They form the basis for rich communities of other invertebrates, plants, fish, and protists. The polyps live only on the reef surface. Because they depend on symbiotic photosynthetic algae, zooxanthellae, they cannot live where light does not penetrate.

scrub forest

scrub forests develop in areas that experience dry seasons.

sexual

reproduction that includes combining the genetic contribution of two individuals, a male and a female

tactile

uses touch to communicate

tropical savanna and grassland

A terrestrial biome. Savannas are grasslands with scattered individual trees that do not form a closed canopy. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia.

savanna

A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. See also Tropical savanna and grassland biome.

temperate grassland

A terrestrial biome found in temperate latitudes (>23.5° N or S latitude). Vegetation is made up mostly of grasses, the height and species diversity of which depend largely on the amount of moisture available. Fire and grazing are important in the long-term maintenance of grasslands.

visual

uses sight to communicate

Ref­er­ences

En­cy­clopae­dia Bri­tan­nica. 1986. Vol­umes 4 and 7. En­cy­clopae­dia Bri­tan­nica, Inc., Chicago.

Fuller, Errol. 1987. Ex­tinct Birds. Facts on File Pub­li­ca­tions, New York.

Green­way, James C. Jr. 1958. Ex­tinct and Van­ish­ing Birds of the World. Amer­i­cal Com­mit­tee for In­ter­na­tional Wild Life Pro­tec­tion, New York.

Strick­land, H.E. and Melville, A.G. 1848. The Dodo and Its Kin­dred. Reeve, Ben­ham, and Reeve, Lon­don.