Birds [] Birds are in the Animalia kingdom and the Chordata phylum. There are over 10,000 species of birds discovered today. All birds consist of feathers and wings, there are no other animal besides birds that have feathers.Birds lay eggs and are warm- blooded. Not all birds can fly, like penguins. The largest bird is an ostrich, the average ostrich weighs from 139 lbs to 320 lbs, that's as much as 2 grown men. The most common species of birds are chickens, also chickens can fly up to 4 feet. There are all types of birds, fast, slow, big, small. The fastest bird in flight is a peregrine falcon. The peregrine falcon can reach the speeds of up to 100 miles per hour, they can beat any bird in the world in a race. The fastest bird on its feet is an ostrich, it can outrun a horse. Penguins are the fastest birds in water, they spend most of their time in water. Penguins have to look out for the many seals that try to eat them. There are many things you probably don't know about birds. Like blue birds cannot see the color blue. Ostriches can grow up to 9 feet. They are taller than the average man. The duck is the noisiest bird in the bird species. They quack 150 times a day. Birds eyesight is very weird, whatever is right infront of them is in focus and any other thing around that focus is blurry.