Couldn't you just use CORNSYRUP to make hummingbird nectar? Seems like it would be a lot less trouble than boiling, freezing, thawing, storing and measuring. I think the fact that it is "readily available" to use at a moments notice would outweigh a more expensive cost, especially for those avid hummingbird lovers. I don't no much more about the ingrediants other than that it's a sugar syrup to make candy with. Maybe it's not good for birds cause its made from corn sugars?