Some people think that due to most of red color natural flowers the birds have more attraction towards red color as compared to other. It is also observed from some expert’s reviews that the birds are more attracted towards red color. That’s why some people try to add red dye in the nectar to attract the hummingbirds towards their feeder.
Please don’t use the red dye in their nectar. It may cause the harmful health issues for them. Their digestive system is not too strong to digest any irregular food. You don’t need to add some extra color in your nectar to make it red. There is lot of hummingbirds feeders in the market which comes in red color so you can buy any red color feeder for bird’s attraction other than mixing the red dye in nectar.