This pigeon showed up on my doorstep one late afternoon. I tried to scare him away but he wouldn't frighten. I even tried my last humane resort, pestering him with a water gun, but he just stood there and took it. He didn't seem hurt or sick; he just refused to leave. There was this look in his eyes I can't really explain. He almost seemed to say "Let me stay here, I don't have anywhere else to go". I was surprised by his determination to stake his claim on my doorstep, so I went in my house and let him be. He was dead the next morning.