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The vertebrate class Aves includes the birds, an extremely distinctive and successful clade, with an estimated 9000 species worldwide, including the snowy owl pictured here. Although descended from the dinosaurs, birds have evolved remarkable specializations for flight: a unique "one-way" breathing system,
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www.ucmp.berkeley.edu/diapsids/birds/birdintro.html
www.ucmp.berkeley.edu/diapsids/birds/birdintro.html
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Aves: More on Morphology ... As birds go, the domestic chicken is hardly built for high-performance flight. Yet even in the chicken skeleton shown here, many of the flight adaptations found in most birds can easily be seen. The sternum, or breastbone, bears a prominent keel where the flight muscles attach.
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www.ucmp.berkeley.edu/diapsids/birds/birdmm.html
www.ucmp.berkeley.edu/diapsids/birds/birdmm.html
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Choose a group from the table below: ... Quetzals and Trogons ... Hummingbirds and Swifts...
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www.angelfire.com/mo2/animals1/bird/bird.html
www.angelfire.com/mo2/animals1/bird/bird.html
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Diapsida (birds, crocodiles, lizards, snakes, and relatives) ... Class Aves (birds) ... Home Kingdom Animalia Phylum Chordata Subphylum Vertebrata Class Aves...
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animaldiversity.ummz.umich.edu/site/accounts/classifica...
animaldiversity.ummz.umich.edu/site/accounts/classification/Aves.html
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Definition of class Aves in the Online Dictionary. Meaning of class Aves. Pronunciation of class Aves. Translations of class Aves. class Aves synonyms, class Aves antonyms. Information about class Aves in the free online English dictionary and encyclopedia. ... class Aves - (ornithology) the class of birds...
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www.thefreedictionary.com/class+Aves
www.thefreedictionary.com/class+Aves
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Next...
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faculty.evansville.edu/de3/b10802/PPoint/Aves/sld001.ht...
faculty.evansville.edu/de3/b10802/PPoint/Aves/sld001.htm
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• Late Triassic deposits in Texas • Fossil more similar to modern birds • If really an ancestor would change thinking about bird origins • HOWEVER ... • Similarities between birds and reptiles; ... Classification of Birds...
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www.d.umn.edu/biology/courses/bio3701/Birds.htm
www.d.umn.edu/biology/courses/bio3701/Birds.htm
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Birds (Class Aves) are warm-blooded (endothermic) vertebrates. Birds have feathers covering their skin and their forelimbs are modified into wings. ... Birds - Class Aves...
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animals.about.com/od/birds/p/aves.htm
animals.about.com/od/birds/p/aves.htm
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The discovery of the close link between reptiles and birds led some authorities such as Robert Bakker to argue (perhaps jokingly?) that Class Aves should be abolished and the birds considered as part of the Dinosauria.
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www.cyberlizard.plus.com/aves.htm
www.cyberlizard.plus.com/aves.htm
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