Baltimore Oriole birds eat grape jelly and oranges, but so do some other bird species. Oriole feeders are easy to make. I used a 1/4 inch dowel to put orange halves on and just a dish for the jelly. Later in the season, yellow jackets will come to the feeder and the birds will have competition. Male and Female Baltimore Orioles are shown in this video along with other bird species that enjoy eating grape jelly.
"Bird Man Mel: How to Attract Orioles to Your Yard". Tips and tricks to attracting Orioles.