Wafer Thin Avian Skull

A couple of weeks ago, I found another window-strike victim at my place of work. A Wilson's Warbler this time. Yes, another new species for me. Today, I walked by where the bird had been resting in the flower bed and noticed the insect-cleaned skull. I took a picture because I was so amazed by how small and paper-thin it was. The whole thing was only an inch long.