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The top documents tagged [anterior air sacs]
Parts and Purpose. What is different about the bird compared to mammals? Feathers Lack teeth Lay eggs Float and fly Waste excreted from only one orifice
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Bird respiration
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Ornithology :D
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Phylum: Chordata Class: Aves (Birds). Classification Kingdom Animalia ---Phylum Chordata ------Subphylum Vertebrata ---------Class Aves Aviation = flight
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Feb 14, 2013
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