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The Raven

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  1. The Raven CorvusCorax

  2. Animalia

  3. Animalia Chordata

  4. Animalia Chordata Aves

  5. Animalia Chordata Aves Passeriformes

  6. Animalia Chordata Aves Passeriformes Corvidae

  7. Animalia Chordata Aves Passeriformes Corvidae Corvus

  8. Animalia Chordata Aves Passeriformes Corvidae Corvus CorvusCorax

  9. Distribution • Ravens range from Alaska down to Central America. • They are known as one of the most widespread birds in the world. • Can also be found in Europe, Greenland, the British Isles, northern Scandanavia, Iceland, east through central Asia and to the south of the Himalayas and northwestern India.

  10. Conservation • According to the IUCN, Ravens are of least concern. • Their population is increasing.

  11. Habitat • Open and forest habitats across western and northern North America • High desert, tundra, and grassland • Also live in cities

  12. Physical Appearance • Ravens are completely black with a shaggy neck and a Bowie knife type of beak • Very large • Wedge-shaped tail • Thinner than crows with longer “fingers” at the wingtips

  13. Physical Appearance • Weighs 24.3-57.3 ounces • Length is 22-27.2 inches long • Has a wingspan of 45.7-46.5 inches • There are no differences between the males and females

  14. Behavior • Ravens are very bold, clever, and playful • They usually travel by themselves or in pairs • They are very smart and are one of the only species of birds to have a sense of humor • Are said to be more graceful and agile than crows, often performing aerobatics • Are smart enough to come together to solve problems

  15. Breeding • Courtship involves the male soaring, swooping, and tumbling in front of the female • The pair then soar together and perch and preen one another • Ravens mate for life • They begin breeding at 2-4 years of age

  16. Nesting/Young • Female ravens lay 4-7 eggs that are greenish and blotched brown • Both parents incubate the egg • The fledgling stays with the parents for about 6-10 weeks

  17. Hibernation/Migration • Ravens do not hibernate, migrate, nor undergo torpor

  18. Diet • Arthropods, amphibians, small mammals, birds, reptiles, and carrion • Raven’s aren’t picky and if they’re hungry enough, they’ll eat animal dung • May also be found eating out of the trash cans in cities

  19. Mortality/Longevity • Mortality rate is about fifty percent in the first year • The longer a raven spends with its parents, the better chance of survival it has in the wild • Lives for about 13 years in the wild • Oldest raven lived to 29 years in captivity

  20. Predators • The only three things ravens have to fear are eagles, hawks, and humans • Humans are the raven’s largest threat

  21. Human Relationships • Ravens are comfortable around humans and are often found in cities • Are used to humans and aren’t frightened by them nor by their machinery

  22. Works Cited • All About Birds. The Cornell Lab of Orinthology, n.d. Web. 25 Feb. 2013. <http://www.allaboutbirds.org/guide/common_raven/id>. • All about Birds. Cornell Lab of Orinthology, n.d. Web. 4 Mar. 2013. <http://www.allaboutbirds.org/guide/common_raven/lifehistory>. • Arizona-Sonara Desert Museum. Arizona-Sonara Desert Museum, 2006. Web. 25 Feb. 2013. <http://www.desertmuseum.org/books/nhsd_raven.php>. • Common Raven. Texas Parks & Wildlife, 2002. Web. 25 Feb. 2013. <http://www.passporttotexas.com/birds/oct01.html>. • Common Raven. N.p., n.d. Web. 24 Mar. 2013. <http://www.nrri.umn.edu/mnbirds/accounts/CORAa2.htm>. • Kilham, Lawrence. The American Crow and the Common Raven. Illus. Joan Waltermire. N.p.: Texas A&M UP, 1989. Print. • Marzluff, John M. In the Company of Crows and Ravens. Illus. Tony Angell. N.p.: Yale University, 2005. Print. • Nature Mapping Program. N.p., n.d. Web. 25 Mar. 2013. <http://naturemappingfoundation.org/natmap/facts/common_raven_712.html>.

  23. Thank you for listening!