Question

What is downstroke movement of birds?
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Science Part-111​

Answer 1

Answer:

Birds need large muscles to move their wings up and down.When the wings push down during flying (the downstroke), the feathers stay close together and do not let air move between them. When the wings are pulled up (the upstroke), air is able to move between the feathers.

Answer 2

Answer:

hope it helps you all budds..