I also saw at least three ruby-throated hummingbirds. They were nectaring at obedient plant in the BYG and catnip elsewhere in the garden (the catnip was also attracting a lot of bumblebees).

At one point, I watched one hummingbird hover around the black elderberry, where it eventually landed for a nano-second, and later, I saw a hummingbird show some interest in evening primrose.