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No. Birds evolved from a group of small carnivorous dinosaurs related to the "raptors."
Gliding in the air can be done be many birds, such as various predatory birds like eagles, as well as vultures and other birds of prey. Other birds that travel long distances can use a variant of gliding called soaring to move, such birds include many seabirds like seagulls. Some aquatic animals can appear to glide through the water. This is accomplished with cilia. such animals include flatworms, rotifers, gastrotriches and a variety of marine larvae.
Soaring & gliding flight involve little wing movement. Birds soar & glide with their wings extended.
long broad and rounded wings
Gliding animals have indeed evolved structures that slow their fall. Their wings act as a parachute slowing their fall to the ground.
It is likely that there was an intermediate stage of gliding before true flight evolved.
Philip Wills has written: 'The beauty of gliding' 'Where no birds fly'
When people first saw squirrels traveling in the air, they thought they were flying like birds and/or bats, not gliding. It took people a while to realize the squirrels were really gliding, not flying.
Philip Aubrey Wills has written: 'Where no birds fly' -- subject(s): Gliding and soaring 'Free as a bird' -- subject(s): Gliding and soaring
Flying vertebrates include birds, bats, flying (or gliding) squirrels, snakes, lizards, frogs and fish.
They evolved from birds.
No, birds didn't evolve from lizards, but they did evolve from dinosaurs, a different group of reptiles. Dinosaurs are different from lizards especially because of their hip structure. Birds descended from a group of dinosaurs known as theropods (bipedal carnivores)