I looked at the ID info on inaturalist and it seems to be most similar to the genus buteo. these are also very common in the area
there were at least a hundred
Small ducks, reddish heads. Quite a few flushed from the creek. Uncertain in this ID.
Small amounts of iridescent green on head. Another drake showed slightly more green.
Found this on a spruce tree on Howe island, Gananoque, its @3" long and about diameter of a marker