Songbird Essentials Yellow Thistle Spiral Feeder17. 5 in. Yellow Thistle Spiral Feeder with 18 ports. Consumers and birds LOVE patented Songbird Essentials BirdQuest Spiral Feeders! More ports means more birds. Birds love to Run The Spiral instead of flying to another perch. Lifetime warranty on workmanship and normal wear and tear. Aluminum and stainless steel parts. Squirrel proof patented locking lid just twist and lock those pesky varmints out. Easy to clean twist and clean (patent pending)