In the lower gardens, there were juncos. chickadees, goldfinches and titmice, but didn't even see a sparrow - not even a song sparrow which is most unusual.
I heard a lot of noise coming from the brush in the lower gardens that parallels Winchester Street. The blue jays were upset. And then every once in a while, I'd hear a loud squawk. Went over to check it out and found what I think must have been a sharpie (as it was not much bigger than the jays). It was absolutely on the attack. They would all fly from tree to tree and the sharpie was in hot pursuit.
I didn't have the patience to wait it out or the desire to see anything too brutal so not sure if the sharpie was successful or not.
The photo below, left, shows the jays with the sharpie silhouette in the upper right, so you can see the size comparison.
The upper gardens were also filled with juncos and chickadees and not much else, at least while I was there. Pretty quiet in general.