We have large plate glass windows onto the garden. Despite numerous Audubon Society "bird protection" decals, we get the odd hummer flying full bore into the glass. Typically they fall to the ground for a few minutes, then wake up and fly away. Sometimes I'll pick them up and put them in the sun, or on a chilly morning I'll hold them in the sun in cupped hands until they revive. They weigh nothing, and when they roll over and start staggering around on your palm, their little feet are just pinpricks on your skin. Very special experience!

Years ago I was able to free an English sparrow that had been stealing fibers from our front door mat, but got one foot tangled in the threads. She kept trying to fly away, then falling when she hit the end of the leash. When I walked up, she went totally still and I was able to enfold her in one hand and tease her foot free with the other. Walked a few steps away, then opened my hand. It took her a moment to realize she was free, and take off. By comparison to a hummer, she was a huge and heavy bird!