What kind of feeder do you use for that?? We have orioles that I'd like to bring in closer (Baltimore and Bullock's).
The bird store had an Oriole feeder that had a hole drilled in it to hold a glass bowl - about the size of one of those Pyrex "custard cups" (I'm probably dating myself here). Also on this feeder are spikes on which to impale orange halves. I got a fair number of wasps in the jelly bowl, though.
I also bought an Oriole feeder which is about like a Hummingbird feeder but probably has bigger holes & it has little indentations to hold jelly (see photo). These did not work well - holders don't hold enough & everything spills & the birds poop in it.