Yellow Breasted Chat in Toronto, Ontario?

This bird is about the same size as a cardinal. We saw it flying above us. It seemed to have a very deep yellow breast and chin. The wings looked very dark from a far. Looking at them with our binoculars, the breast was such a deep bright yellow. The upper body looked blue or black. The wing span seemed far reaching. We are still not certain if this was a yellow breasted chat. There were two of them. We saw what we thought were yellow breasted chats in May 2010. There seemed to be a group of them then, in the very same spot.These photos were taken by Allan with his newest camera. This bird was way far away in the top branch of a tall dead tree.