We have several hummingbird feeders in the yard and hanging over the deck. The one we have hanging on the deck is a Droll Yankees and we watch this one more often than the others because of its location. This feeder has a center "ant trap" to keep ants from entering the feeder. It collects water when it rains and surprisingly enough, many of our birds drink from it. Believe it or not we have seen tiny hummingbirds challenge these much larger birds. And in every case, the larger bird retreats.
The chickadee hangs on.
The goldfinch, upside down to get a drink.
The titmouse is not after a drink at all.
There was an insect caught in the trap. Easy pickin's
(You may need to click and enlarge)
It always surprises me to see other birds at the hummingbird feeder, especially when they are there to get a drink. It seems so awkward. And within three feet of the feeder is a large birdbath ever so much easier to access. Who knows? Maybe they don't want to drink bath water.