My mixture is five cups of sugar to a gallon of water. If you disolve the five cups in sufficient water to make only one quart of concentrate, you would then dilute it with three parts water to each one part of concentrate when you fill your feeders. With this much sugar, I do not believe a concentrate would be possible to make in anything lower than a two to one ratio; five cups of sugar disolved in enough water to make only half a gallon is going to be a pretty thick syrup, but it would allow you to then cut it even with water (one part concentrate, one part water), and I don't know if this would help you that much.
I don't think it would be possible to make it any thicker and have it not start crystalizing. The other ingredients in the commercial nectors are not necessary; I have raised many generations of hummers on just this sugar water, and they migrate south each winter, returning in the spring. As I type this, I am looking out my window where I have two one cup feeders with ... more.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.