Now you can offer red nectar to hummingbirds without the fear of artificial dyes with More Birds Bird Health+ 64 oz Natural Red Ready-to-Use Hummingbird Nectar! The added carmine provides a natural red coloring without any artificial dyes or flavors. Simply pour into your hummingbird feeder–no boiling required. Our ready-to-use nectar is a mess-free way to feed hummingbirds. The resealable container allows you to only use what you need, while the leftover nectar in the bottle always stays fresh. Vitamins and calcium are added to promote successful egg hatching. More Bird's nectars are made from a blend of natural sugars found in flowers that birds feed from.