Experts have grouped these species into 30 categories.
Around 9,500 species of birds exist in the world. Archeology shows that when they first arrived in ancient times in Hawaii and on islands of the South Pacific and Caribbean, many birds had killed before Europeans. European explorers didn’t just kill the species. Even though many more may have died out that scientists don’t know about. There are around more than 150 kinds of birds have become extinct since 1600. God has made a unique system instead of carrying the extra weight of emerging young ones inside their bodies like other mammals, they lay eggs and incubate them in a nest. Even the way a bird reproduces is best for the flight. During flying they use their beaks for grabbing and swallowing food. Interesting facts that birds usually eat during flight and digest later. They have an exclusive digestive system that lets them eat when they want. The powerful shoulder muscles, attached to the keel, a special ridge of bone that runs down the center of the wide sternum, or breastbone.įurthermore, birds use their tail feathers for steering. It attaches to the bird’s air sac structure, which has connected with its lungs. The main bone, the humerus, is resembled the upper arm of a mammal. Interestingly, you know an airplane’s wings modeled after bird wings.īirds’ bones and muscular system of wings are also highly specialized. The prime edge is thicker than the back edge, which has covered in feathers that narrow to a point. The wings, for instance, had formed to create lift. The structure is very important it reflects upon its ability to fly. There are around every type and size of birds the largest is the ostrich which, is around nine feet and, also the smallest one which, is only two-inch-long, humming bee. Birds almost find everywhere in the world in almost all territories. But there are some birds like penguins that have lost the ability to fly but retained their wings. Many birds can run, jump, swim, and dive also they don’t just rely upon flying.
In this article, we shall discuss more interesting facts about birds. Plus, they have forelimbs which have modified into wings, a hard-shelled egg, and keen visualization, one of the major senses which they rely on most for getting information about the atmosphere. Birds are vertebrate which, are warm-blooded creatures and have more correlated with reptiles than mammals.
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