A warbler hit my window

I found a dead warbler lying on the ground outside the window of my living room while I was watering my flowers. I first mistook it as a flycatcher, but finally figured out by the bright yellow uppertail coverts that it is a yellow rumped warbler. It is a juvenile, as it does not have yellow feathers on the chest and the head, which once confused me.

Perhaps I need to put a warning note on the window, in birdish, of course, as I'm setting up a hummingbird feeder right there. The rate of human technology development is way beyond the evolution of the wildlife cognition, but some of them adapt quickly, as crows and raccoons; some don't, like this poor flycatcher and a lot of others. The "natural" selection is going on.