I don't really start the higher protein until March/1 for the parrots in a, usually futile, effort to keep their breeding season as short as possible. I just made gloop this morning and I added more flax and sesame seeds to it and more grains/less rice but the difference in protein is not really that much. It's when I start adding the hemp seed and/or insect protein and/or sprouts that the level increases more significantly. And, yes, you are right that higher protein does make them hormonal but I do it on purpose so the seasons are marked not only by the longer days but also by the richer, higher protein food -just as it would happen in nature. I am big on trying to do everything as close as it would happen in nature because I believe that keeping the natural circannual biorhythms reduces the stress of captivity.