Thanks for the suggestion - it was one of the possibles I considered. It was an interesting afternoon - I also got the sightings of a Myrtle Warbler and some Ruby-crowned Kinglets. Just to finish off, a Brown-headed Cowbird appeared on my lawn, and a Common Flicker landed in a neighbor's tree.
Brampton (I live around Dixie/William's Parkway) is not usually so interesting for a birder!