Arundale Sky Cafi Bluebird Feeder Sky Cafi Bluebird Feeder. The Sky Cafi Bluebird Feeder with its beautiful sapphire blue dome is designed to attract bluebirds, orioles and their fledglings. Carefully protected from larger birds like robins by its wire-formed cylinder, mealworms are held within a cup in the center of the feeder. 100% safe & secure shopping; Superior customer service. This item has high quality with reasonable price.