Startled by the hard thunk, thunk. I looked out the window to investigate the origin of the window hit. The sounders were two purple finch that lay stunned in the heavy wet snow. Bringing the birds in the house, I carefully placed them in a brown paper bag. Closing the top, they were given a quiet, dark environment to recover from the shock of hitting the window.
An hour went by. Checking the bag, one bird lay where I had placed him, the other was up on his feet and ready to get out of Dodge. Taking the recovered bird outside, he pushed off my hand and flew away without looking back. The second bird remained behind , and would never fly or sing again.