orioles

I have oriole feeders set up in my back yard. Every night something empties out the feeders. Sometimes the feeders are knocked off the hook that they are on and are laying on the ground in the morning. I'm not sure what is doing this or if it's done in the night or early morning hours. I think it's another bird any suggestions on how to stop this from happening, aside from bringing the feeders in every night?


Comment
Do you have any deer where you live? We had to raise our feeders to keep the deer from eating them!
Susan