Perky-Pet 8135-2 Carnival Oriole Feeder, 16 fl-oz, Glass, Luster | The 4 feeding ports on the brushed nickel base feature vibrant orange flowers with green leaves, resembling of the flowers orioles drink from in nature. The port openings are slightly larger than those of a hummingbird feeder to make room for an oriole's larger beak and tongue. Holding up to 16 oz of nectar will come in handy when the orioles start flocking to this feeder.