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Cardinal (Bird) - Wikipedia, the Free Encyclopedia
Wikipedia's information about the cardinal (bird).
https://en.wikipedia.org/wiki/Cardinal_(bird)
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Northern Cardinal Habits - Wild Bird Watching
The Habits of the Northern Cardinal - What Do They Eat, Where they Nest, Choosing Mates Video
http://www.wild-bird-watching.com/Cardinal.html
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Northern Cardinal - Audubon Field Guide
One of our most popular birds, the Cardinal is the official state bird of no fewer than seven eastern states. Abundant in the Southeast, it has been extending its range northward for decades, and it now brightens winter days with its color and its whistled song as far north as southeastern Canada.
https://www.audubon.org/field-guide/bird/northern-cardinal
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Cardinal - Bird - Britannica
Any of various medium-size thick-billed species of songbirds of the New World, many with crested heads. The males all sport at least some bright red plumage.
http://www.britannica.com/animal/cardinal-bird
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Northern Cardinal - Cardinalis cardinalis - ARKive
Learn more about the Northern cardinal - with amazing Northern cardinal photos and facts on ARKive
http://www.arkive.org/northern-cardinal/cardinalis-cardinalis/
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Northern Cardinal, Identification - AllAboutBirds
Learn how to identify Northern Cardinal, its life history, cool facts, sounds and calls, and watch videos. The male Northern Cardinal is perhaps responsible for getting more people to open up a field guide than any other bird.
https://www.allaboutbirds.org/guide/Northern_Cardinal/id
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Northern Cardinal Photos - Smithsonian Migratory Bird Center
Gallery of northern cardinal pictures submitted by photographers.
http://nationalzoo.si.edu/scbi/migratorybirds/featured_photo/bird.cfm?pix=Northern_Cardinal
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ADW: Cardinalis Cardinalis Information
Northern cardinals are native to the Nearctic region. They are found throughout eastern and central North America from southern Canada into parts of Mexico and Central America. They have also been introduced to California, Hawaii and Bermuda.
http://animaldiversity.org/accounts/Cardinalis_cardinalis/
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Cardinal Bird Facts
Find out about Cardinal birds, and ways to attract nesting Northern Cardinals to your yard with the right types of bird foods, plants and more.
http://www.birdchannel.com/wild-bird/back-yard-birding/cardinal-chicks-in-view.aspx
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Cardinals Education -Wild Birds Unlimited
Long seen as a favorite among feeder birds, the cardinals can be appreciated as much for their unique habits and behaviors as they are for their brightly colored feathers.
http://www.wbu.com/education/cardinals.html
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Cardinals - National Geographic
Learn all you wanted to know about cardinals with pictures, videos, photos, facts, and news from National Geographic.
http://animals.nationalgeographic.com/animals/birds/cardinal