As I sit on my porch, entertained by the drama going on around my three hummingbird feeders, I notice that the sugar water in the feeders doesn’t seem to be going down as fast as it usually does. I know it isn’t because I forgot to add the sugar, since I had already done that last week and made a point to remember it this time. So, what is the reason?Then it dawns on me: despite a total of nineteen holes for the hummingbirds to feed from, they are so focused on attacking each other and running each other off ...