Birds

Paper Summary:

The paper defines birds as warm-blooded vertebrate animals that are covered with feathers, have wings, a beak and no teeth. The paper describes the different types of feathers and their respective functions. The paper looks at the respiratory, circulatory and digestive systems of the birds and their efficiencies. The paper discusses their food and habitats and notes that there are a few species of birds that do not fly, such as the penguin.

From the Paper:

"Birds belong to the Aves Classification in biology and live virtually anywhere in the world. They are amniotes (animals whose eggs are protected from drying out), a group that includes mammals, dinosaurs and reptiles). There are approximately 9,000 species, divided into 24 orders and 146 families (which include, for example, Anseriformes (ducks), apodiformes, caprimulgiformes, charadriiformes, ciconiformes, columbiformes, coraciiformes, cucliformes, falconiformes, galliformes, gaviiformes, and so on). Birds are warm-blooded vertebrate animals that are covered with feathers, have wings, a beak, and no teeth. Feathers are actually modified scales. (Enchanted 1)"

Sample of Sources Used:

• All About Birds. Cornell Lab of Ornithology. http://www.birds.cornell.edu/.
• Bull, John, ed., Simon & Schuster's Guide to Birds of the World. New York: Simon and Schuster, 1978.
• Duncraft Database of Birds http://duncraft.whatbird.com/mwg/_/0/attrs.aspx.
• Enchanted Learning http://www.enchantedlearning.com/subjects/birds/.
• National Geographic Field Guide to the Birds of North America, 4th Edition, Nov 1 2002, New York: National Geographic

More papers on Birds:

• Analytical Essay # 148319 : "From Dinosaurs to Birds"
• Essay # 31668 : "The Birds"
• Comparison Essay # 26370 : "The Birds"

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