I also notice that they eat only certain colors and that the colors vary from day to day and week to week. I wonder why they do that??? It wasn't until recently that they started eating the yellow ones at all.....
I just bought of bag of zupreem today too! Keen had been eating Kaytee All Natural Pellet & Seed mix. I notice he was eating mostly all the seeds only. He dove right in on the Zupreem.
I feed my yellow napes the wild and spicy flavored zupreem pellets they love making soup too. i also find it funny they eat all the green pellets before they eat the other colors. lol