Because they overlap, the feathers catch and hold the air. Birds - Birds are animals that have feathers, wings, and lay eggs. Flies have wings. The world is full of wonderful and wow-worthy creatures.And there are more than a few beasts to gawk at: In 2011, the Census of Marine Life estimated that there were 6.5 million species living on land and 2.2 million living in the ocean, with 86 percent of all species on land and 91 percent of all species in the sea still waiting to be discovered. So what makes an animal a bird? For example, make a group of animals that has fur and one that has feathers. All birds have feathers and birds are the only animals that do. Then the edge of the feather muffles the sound of air flowing over the wing and shifts the angle at which air flows. Using the animal cards that the students have drawn, have students group the animals by similarity based on different characteristics. Contour feathers are strong and lightweight, while down feathers are soft and fluffy. Bats and flies are not birds. Owls' wings, however, are unique because they reduce noise caused by turbulence. The answer is feathers! These wings then gradually became more powerful and covered in feathers and were eventually used to fly. This helps the bird to fly, steer itself and land. 1. This helps the bird to fly, steer itself and land. Mammals - Mammals are warm-blooded animals that nurse their young with milk and have fur or hair. They may also be plucked to line the nest and provide insulation to the eggs and young. Feathers insulate birds from water and cold temperatures. Bats have wings. https://www.dkfindout.com/us/animals-and-nature/birds/vultures/#! Some species have a crest of feathers on their heads. Bats have wings. Some examples of bird species include the bald eagle, the cardinal, the flamingo, ostriches, and the red-tailed hawk. The answer is feathers! https://sites.google.com/site/unlimitedsciencebysarah/home/animal Animals can also sense what goes on around them. All birds have feathers and birds are the only animals that do. Down feathers provide an insulating layer next to the bird's skin. This design breaks down turbulence into smaller currents called micro-turbulences. The feathers on a bird’s wings and tail overlap. Many, but not all, birds can fly. The feathers on a bird’s wings and tail overlap. Animals are living things . So what makes an animal a bird? Bats and flies are not birds. Like plants , animals need food and water to live. An owl's primary feathers are serrated like a comb. Their bodies allow them to move in reaction to their surroundings. Because they overlap, the feathers catch and hold the air. Flies have wings. The individual feathers in the wings and tail play important roles in controlling flight. Unlike plants, which make their own food, animals feed themselves by eating plants or other animals. Contour feathers on the wings and tail help the bird steer and keep it from spinning out of control. Contour feathers give birds their coloring and smooth shape as well as help birds to fly. Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which evolved from forelimbs , gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites , penguins , and diverse endemic island species. .

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