Major Differences
Hummingbird and oriole feeders are both considered nectar feeders because they simulate flower nectar that these birds like to eat. In general, hummingbird feeders are red and have smaller holes and perches. Oriole feeders are orange with larger perches. Both can be filled with the same type of nectar.
Other Types of Oriole Feeders
There are a number of different types of oriole feeders available. Some are designed like hummingbird feeders to feed orioles nectar (sugar water). Oriole feeders can also be designed to feed orioles fruit, jelly, suet cakes as well as sugar water. Some feeders may combine several of these features into one feeder. Orioles love grape or apple jelly, orange marmalade, oranges and berries.
How to Make Nectar
Hummingbird and oriole nectar is made the same way. Add one part sugar to four parts boiling water. Stir until the sugar is totally dissolved. Wait for the water to cool before using it. Do not add food coloring as it is potentially harmful for the birds. Change nectar every three to five days to prevent mold and fermentation. Do not use honey or artificial sweeteners when making nectar. Store extra nectar in the refrigerator until ready to use.
When to Use Nectar Feeders
For the most part, orioles and hummingbirds are migratory birds, so nectar feeders only need to be used during the spring, summer and fall. Some southern and western states may have hummingbirds year round. Place your nectar feeders out in March or April (earlier in the south, later in the north). Keep them out until about two weeks after you last see birds feeding at them.