I've had EXTREME problems with Steller's Jays... I have both Yellow &
Wilson's Warblers... Both trying to get some suet..... The steller's are
always very dominant, as are the hummingbirds, both attacking the poor
warblers; and anything else for that matter.... whenever they dared to come
near.... The only thing I found, is a brand of sunflower which the
steller's hate, while the Pine siskins( I see plenty of them) LOVED. The
steller's took one seed in they're beak and the never touched the stuff
again, nor chase anything else from it...

Elizabeth Noyes Port Angeles, Wa (noyes at olypen.com)