Aug 23, 2020
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Free Printable Animals Bird Pdf Coloring Pages 02

Free Printable Animals Bird Pdf Coloring Pages 02

Free Printable Animals Bird Pdf Coloring Pages 02

Birds are a group of warm-blooded vertebrates constituting the class Aves, characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the 5 cm (2 in) bee hummingbird to the 2.75 m (9 ft) ostrich. There are about ten thousand living species, more than half of which are passerine, or “perching” birds.

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