This Bluebird Feeder is designed to attract bluebird's and keep the squirrels and starlings out. There is a blue glass mealworm cup included to attract bluebirds. The glass is dishwasher safe, making it easy to clean and refill. The bird feeder is surrounded by sturdy vinyl coated wire mesh. The top and bottom are powder coated in a blue finish for years of durability. Bird watchers will be delighted to see the birds this feeder can attract!