How to Keep Hummingbird Nectar From Freezing (Why the 1:3 Ratio is Dangerous)
The safest default winter hummingbird nectar recipe is still one part plain white sugar to four parts water. Some reputable bird organizations allow a slightly stronger mix, up to about one part sugar to three parts water during cold, wet conditions, so a 1:3 mix should not be described as lethal or as something that