It evidently rebounded off my front plate glass window in a bird-brained attempt to get at the feeder birds in the back yard by flying through my house.
When I looked outside, expecting to see a junco or other frequent visitor on the ground, I was amazed to see the shrike. It was an adult, wearing what looked like new plumage, and quite handsome, its ebon mask contrasting with light blue-gray body feathers.
It was -- at the very least -- stunned by its accident, and perhaps unconscious, but there was no blood and little of the ghastly twitching that indicates brain or other very serious internal damage.
About an hour later, just before I delivered it to veterinarian and bird specialist Dr. Steve Metz in Shelburne, I peeked into the cozy traveling box I had concocted for it: it was now able to raise its head, and was looking around alertly.
I hope that after a few days of R & R with Dr. Metz, the shrike will be well enough to be released into the wild.
And a little smarter about flying into plate glass windows....