Wow everyone loves to see the bird and loves to domesticate it. These birds are of multiple colors and different in size. 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 5.5 cm (2.2 in) bee hummingbird to the 2.8 m (9 ft 2 in) ostrich. There are about ten