Oriole feeders have larger port holes than hummingbird feeders BUT this is a true story..........
Last summer, I witnessed an oriole trying so desperately to drink the hummer's nectar that he/she
literally tore off the little yellow plastic flower port-hole cover on the feeder. I then noticed that the
oriole's beak fit perectly in the hummer's feeder BUT the nectar ratio is slightly different for the two
birds.
Hummer nectar is 1:4 sugar/water
Oriole nectar is 1:6 sugar/water
So I went out and bought an oriole feeder but that didn't keep them away from the hummingbird feeders.
And I haven't witnessed a hummer drinking from the oriole feeder, ever.