Songbird Essentials® Clear Hummingbird Nectar Catalog Wild Bird & Wildlife Songbird Essentials® Clear Hummingbird Nectar Model Number : SE640 Description Clear RTU Nectar. No mixing necessary! Ready to pour into feeders! Made with Sucrose sugar The sugar that most closely simulates the nectar from flowers. 2 liters. Rates Please contact us for current pricing and availability.