Baltimore Orioles like nectar and will be drawn to blooming Redbud trees, as well as oranges, sugar water & tiny amounts of jelly – don’t put out so much jelly that it risks soiling their feathers. Please use jellies without preservatives in them. Orioles nest in Missouri. They eat a wide variety of insects including tent caterpillars. One can help them by planting fruits they like, and not using pesticides.