Owls have three eyelids for: 1) blinking 2) sleeping and 3) keeping the eyes clean and healthy.
Back in 2013, HuffPost published a video of an unconscious owl (apparently crashed into a storefront window) that a Korean man found on the ground. He awakens his feathery friend by saying, “Sir, get yourself together.”
According to the Audubon Society of Portland, an estimated 1 billion birds die in the United States each year from crashes with windows, but many such impacts are not fatal. [Place] the bird in a small box. Line the box with a towel and place half the box on a heating pad set on low. Give the bird a small bowl of water, but no food. Do not attempt to force the bird to drink. Place the box in a warm quiet place. Check the bird in 1 hour. If the bird is alert, active and able to fly, then release it immediately.
A bird doesn't sing because it has an answer, it sings because it has a song. - Maya Angelou