Hummingbird Sugar Water Ratio: Hit the 1:3 Sweet Spot

When it comes to your hummingbird sugar water ratio, forget what you’ve heard about a 1:4 mix. Science says 1:3 mimics nature best!

Use a 1:3 hummingbird sugar water ratio for a true-to-nature nectar mix. (The Grow Network)

Image by Bryan Hanson from Pixabay

Hummingbird Sugar Water Ratio: Hit the 1:3 Sweet Spot

Not that long ago, we posted an article on homemade hummingbird food. In it, we included a recipe for hummingbird nectar that called for 1 part refined white sugar to 3 parts water. In response to the post, conscientious TGN Community member Kat wrote in with the following concerns.

“Is a 1:3 Hummingbird Food Ratio Really Best?”

“After reading the page about making hummingbird food, I’ve got a question. I’ve been making mine for years, but have always used 1 cup sugar to 4 cups water, not 1:3 like the article says. Everything I find online uses the 1:4 ratio, so I’m wondering why you use a more concentrated syrup?

As a retired vet, I can see where using the thicker syrup might cause the bird to overdose on sugar (if it depends on feeling full to stop eating).

Also, I’ve been feeling uncomfortable about using a pure sugar solution to feed them. I’m trying to eat less sugar myself, and can’t see that it’s the best food for any animal. Have you heard of any vitamin or protein ingredients that one can add to make it a better food? My hummers are at the feeders all day, and I worry that we’re giving them pure energy but not a balanced food.”

Here’s What I Replied

Kat, I just love your kind heart and your concern for the well-being of our hummingbird friends! You asked a couple of excellent questions. I’ll answer them to the best of my ability.

A hummingbird food ratio of 1 part refined sugar to 3 parts water mimics the nectar in their favorite flowers. (The Grow Network)

Image by GeorgeB2 from Pixabay

The 1:3 Hummingbird Sugar Water Ratio Imitates Nature

Question #1: Everything I find online uses the 1:4 ratio, so I’m wondering why you use a more concentrated syrup? 

There’s a really interesting scholarly article over at the LSU Museum of Natural Science website called “A Primer on Sucrose Solutions.” In it, the author explains the proper way to calculate the concentration of a solution that is formed when a solid is dissolved into a liquid. This formula is different from the formula chemists use to determine a concentration when both components are liquids.

I definitely recommend checking out the above link for the nitty-gritty details. But the bottom line is that websites that say a 1:4 sucrose (refined white sugar)-to-water ratio is a 20% solution are incorrect. Why? These sources are using the liquid+liquid formula and not the solid+liquid formula.

Using the proper solid+liquid formula, the 1:4 sucrose-to-water ratio actually produces a sucrose concentration of  17.9%.

Using this same solid+liquid methodology, the 1:3 sugar-to-water ratio produces a sucrose concentration of 22.5%.

The article mentions that several published studies have found that the sucrose concentration of the nectar in hummingbird flowers is 23.9%. Therefore, it concludes that “If we wanted to duplicate the sugar content of flowers in our feeders, we would use a recipe of 1 C sucrose : 3 C water, which results in a sucrose concentration of 22.5% (w/w).”

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Experts recommend against using anything but refined white sugar in hummingbird nectar. (The Grow Network)

Question #2: Have you heard of any vitamin or protein ingredients that one can add to make it a better food? 

Another good question, Kat! Hummingbirds actually eat a whole lot of tiny bugs too,1)http://www.hiltonpond.org/ThisWeek040808.html and I’ve seen the same hummingbirds that swarm our hummingbird feeders sipping at flowers around our yard and even sticking their beaks into my red tomatoes on the vine!

Hummingbirds naturally have a sugar-centric diet. They drink flower nectar and tree sap, both of which have large amounts of sucrose in them. They’ve also been seen to snack on sugary emissions from trees (and even insects!),2)https://www.birdwatchersdigest.com/bwdsite/learn/hummingbirds/what-do-hummingbirds-eat.php which also contain lots of sucrose.

Plain white table sugar mixed with water most closely duplicates the chemical composition of natural nectar. (The Grow Network)

When we fill our feeders with that 1:3 hummingbird food ratio of 1 part white table sugar (sucrose) to 3 parts water, we are essentially mimicking the nectar of the flowers hummingbirds love.

(In fact, the Audubon Society recommends against using anything but refined white sugar in hummingbird nectar: Honey can promote dangerous fungal growth. Organic, natural, and raw sugars contain levels of iron that could be harmful. Plain white table sugar is sucrose, which, when mixed with water, very closely mimics the chemical composition of natural nectar.”3)https://www.audubon.org/news/how-make-hummingbird-nectar

Stick to a 1:3 Hummingbird Sugar Water RatioNature Will Do the Rest

It’s true that there are some amino acids in flower nectar and tree sap that aren’t present in a sugar-water solution. But hummingbirds have enormous appetites to support their fast metabolism, and they round out their diets with plenty of those amino acids while they’re feasting on tiny bugs and flower nectar.

Regarding whether there’s something that should be added to the liquid to make it more healthful for the hummingbirds, the consensus seems to be that it would be more dangerous to try it than not. This is because there’s simply not enough information on what levels of an additive would be harmful or toxic to them. In fact, the Birdwatching Bliss website says, “To play it safe, just stick with the sugar solution and let the hummingbirds naturally supplement their diet.”4)http://www.birdwatching-bliss.com/hummingbird-food-recipe.html

I agree.

While I completely honor your kind intentions in wanting to provide the best possible nutrition for your hummers, in this instance, I do think it’s a case of “better safe than sorry.”

What Do You Think?

Did you find this insight on the best hummingbird nectar ratio helpful? What sugar-to-water mix will you turn to for your feeders in the days ahead? Let us know in the comments below!


This is an updated version of an article that was originally published on August 9, 2018. The author may not currently be available to respond to comments; however, we encourage our Community members to chime in to share their experiences and answer questions!

The Grow Network is a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for our team to earn fees for recommending our favorite products! We may earn a small commission, at no additional cost to you, should you purchase an item after clicking one of our links. Thanks for supporting TGN!

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1 http://www.hiltonpond.org/ThisWeek040808.html
2 https://www.birdwatchersdigest.com/bwdsite/learn/hummingbirds/what-do-hummingbirds-eat.php
3 https://www.audubon.org/news/how-make-hummingbird-nectar
4 http://www.birdwatching-bliss.com/hummingbird-food-recipe.html
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This post was written by Merin Porter


  • Scott Sexton says:

    Cool! Way to break out that science!

    1. Merin Porter says:

      Haha! I love me some science! 😀

  • peppypoblano says:

    I was pleased to run across this article. I too have used the 1:4 ratio for years. Thank you for posting.

    1. Merin Porter says:

      You’re so welcome, Peppy! Thanks for your comment! 🙂

  • LH says:

    Thanks for the article. Had never heard of the 1:3 ratio before. One thing that is also done is that concerns me is that people think that the humming bird food has to be colored, however, the dyes used in the coloring of their food is harmful to them. These are the colors that are carcinogenic to us, what is it doing to them?

    1. Merin Porter says:

      Absolutely, LH — that’s a great point! Because of the way hummingbirds’ eyes are designed, they have a heightened sensitivity to red, yellow, and orange. That’s why red dye has traditionally been added to nectar to attract them; however, the National Audubon Society agrees that, when it comes to this additive, “the chemicals could prove to be harmful to the birds.” It’s also considered unnecessary because most feeders already have some red on them, which does a very effective job on its own of attracting these wonderful birds.

  • Cindy H. says:

    I have come across the information about the type of sugar to use before, and was concerned about using refined white sugar. How is there more iron in raw sugar? The sugar we get is raw, evaporated plant juice (basically). Is it because sorghum is high in iron? Also, if one uses the 1:4 ratio with raw sugar, would that reduce the effects of the higher iron?

  • Mary BethJohnson says:

    After reading this a few months ago, I switched from the common 1:4 sugar to water recipe to this more like nature, 1:3 ratio. hummers love it! I was quite surprised when the first one arrived when it was still quite cold outside here in the NE, no leaves on the trees, etc. A Hummingbird flew right to the exact spot that I had a feeder LAST YEAR and buzzed around, looking confused? as if to say, “WTH? where is that feeder! I’m sure this is the right spot!”
    So cute! I’ll remember to set one earlier next year. I think we really started attracting more Hummers after I planted 6 nice sized Bee Balm plants two summers ago. Caution….they are vigorous growing plant (duh! it’s in the mint family) so know that you will have plenty to share once they get going. They are not blooming yet here but it won’t be long, then I will attract the hummers from quite a distance!

  • Merin Porter says:

    So glad this recipe is making those hummingbirds happy! 🙂 And great tip on the Bee Balm, Mary Beth. Thanks for sharing! 🙂

  • hikinchic says:

    Happy hummingbirds and happy gardeners are a great combination. If you live somewhere where the hummingbirds stick around all year and have temperatures cold enough to freeze the hummingbird feeder necter, you really need a Hummingbird Heinie Warmer. This will not only attract the birds with the colorful lights, but also give them a warming station and liquid food. Here’s the link to check it out: http://hummingbirdheiniewarmer.com/ I had a hummingbird perched on the rim of the Hummingbird Heinie Warmer nearly all day today happily chirping away.

  • pkirscher says:

    I use organic sugar in my hummingbird feeders. Also it is important to clean all bird feeders regularly to prevent diseases that can be transmitted to them.

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