At 3:00 pm today I heard the end of a bird song that sounded similiar to a vireo. Looking up about 60 ft away I saw a Grosbeak sized bird in a leafless area of a tree singing. It had a dark head and a medium cinnamon colored breast observed without optics. The bird flew south before I could get a scope on it. Residential area, no known feeder close by. SW corner of Rice and S Owasso Blvd W 200ft w of Muffler Man. I am not familiar with the song of BHGR but from what I remember, a youtube recording of a BHGR listened to after appeared to fit the bird I had heard. Experience: Bird Bander who has banded over 500 Rose Breasted Grosbeaks. Dennis Meyer