Hehe-- They don't read 'the book'. 'My" orioles have never been
enticed to any feeder- orange, apple or jelly that I offer them. But
they [usually a half dozen or so] show up every year as the mulberries
begin to ripen.

This year a couple pairs and their young have been after the suet
feeders for a month or so.

The goldfinches seem to prefer sunflower to niger seed this year---
and none have mastered the upsidedown feeder that used to be more
popular than the right-side-up one.

Jim