Hmmm... Don't know who (or even what), but somebirdy was visiting the letters on south side diner this morning. I was stuck in traffic so was able to watch as he/she sat on the "t" for a while and then took a little flight over to the "r". Definitely falcon like in profile, both sitting and flying, but had more buffy brown colour than I would have thought for a Peregrine. Although that could have been effect of sun on his feathers as the sun was indeed shining on him.