The Only Hummingbird Nectar Recipe You Need (And What to Never Add)

Mix one cup of plain white granulated sugar into four cups of water and stir until it is completely dissolved. That is a roughly 20 percent sucrose solution, which sits in the same range as the nectar of the tubular flowers hummingbirds feed from in the wild.

You can go slightly richer, three to one, during cold snaps or in early spring when few flowers are open and birds need calories. Do not go richer than that as a habit: syrup that thick is harder for birds to process and stresses their kidneys.

Weaker than five to one is a waste of a trip for the bird. If a feeder near flowers is being ignored, the mix being too thin is a common culprit.

Boiling is not required for safety, only for dissolving sugar quickly and extending fridge life. Let boiled syrup cool completely before filling a feeder.

Red dye. There is no nutritional argument for it and the birds respond to red plastic, not red liquid. Commercial nectars that are bright red are selling to humans.

Honey. It ferments quickly in warm weather and supports a fungus that causes fatal tongue infections in hummingbirds. This is the single most dangerous common substitution.

Brown sugar, raw sugar, turbinado and molasses. All carry iron and other compounds that hummingbirds are poorly equipped to excrete.

Artificial sweeteners. A hummingbird visiting a feeder is refuelling; zero-calorie syrup is starvation dressed as a meal.

Fruit juice. It spoils within hours and attracts wasps far more aggressively than sugar water does.

Above 90°F, change nectar daily or every other day. Between 80 and 90°F, every two days. Between 70 and 80°F, every three days. Below 70°F, you can stretch to five or six days, but look at it every time you pass.

Cloudiness, floating specks, a sour smell or black dots inside the ports all mean the batch is finished. Do not top up over old nectar; empty, rinse and refill.

This is where feeder design decides whether you keep up. A feeder that needs unscrewing, inverting over a sink and two hands to reseat will be changed less often than one you can flip open and pour into. Choose for the chore, not the photo.

Hot water and a bottle brush is the standard. Get inside every port; that is where mould establishes first. Feeders with removable, dishwasher-safe parts make this a two-minute job.

For a feeder that has been neglected, soak the parts in a solution of one part white vinegar to four parts water for an hour, then scrub and rinse very thoroughly. Some keepers use a weak bleach solution, one part bleach to nine parts water; if you do, rinse three times and let everything air dry completely.

Never leave soap residue behind. Hummingbirds detect it and will abandon a feeder that tastes of detergent.

Leaving a feeder up in autumn does not trap birds from migrating. Migration is triggered by day length, not food supply, and a late feeder helps stragglers and injured birds refuel.

In areas with hard frost, bring the feeder in overnight or run two and rotate them, because frozen syrup expands and can crack a glass body or a sealed plastic chamber.

Along the Pacific coast and the southern states, some hummingbirds now overwinter. If you see birds in December, keep feeding them; they are relying on you at that point.