the North American too lazy to fly bird
Well he did get knocked out flying into the window!
Maybe that bird bath had Vodka in it ....
Actually, at this time of year, birds do get intoxicated from eating berries and plums that have fermented. Once, we had a cluster of mountain locust trees that had a heavy crop of red berries. My tomcat and I were walking past and discovered a dozen Robins that were flopping helplessly around on the ground. They'd binged on the berries, that had a high alcohol content.
My cat was quite interested in this and I had to carry him back and lock him in the house, which made him very unhappy. I took a cardboard box back with me and rounded up the robins. I put them in an empty chicken coop, which served as a drunk tank, to sleep it off in safety from predators.
The next morning, they were sober, but very agitated and flew fast out the open cage door. I had picked all the remaining berries, to keep them from continuing their habit. Oddly, they were all males. I guess they were enjoying a night out with the boys.