They are persistent and are keeping the hummingbirds from getting their food. The fact is that the design of certain kinds of hummingbird feeders allows all sorts of small birds to land and, if they are clever, figure out how to drink from the openings. This is especially true of feeders with perches or that are disc-shaped and allow a foothold.
Some hummingbird feeders come without perches or have perches that can be removed.
While it has perches, they can be removed. Occasionally, a chickadee or finch will stop by, but usually they can get little if anything to drink. While no hummingbirds were sighted at the disc feeder, at least two quickly showed up when the bottle feeder was installed. And with the weather they way it's been, they have been drinking heavily. There is no need to use mixtures that contain red dyes.