Keeping orioles away from hummingbird feeders is important because orioles are larger and more aggressive than hummingbirds and can easily dominate a feeder, preventing hummingbirds from getting the food they need. Orioles also have a longer, narrower beak that allows them to reach the nectar in hummingbird feeders more easily than hummingbirds can.
There are a few different things you can do to keep orioles away from hummingbird feeders: