Evie eats pellets, but then again Evie eats EVERYTHING. My dad calls her the “fat little chicken.” I think it’s because I have trouble keeping weight on the other three, but Evie is a good size. I have been trying to convert Alex, but she doesn't seem to want the pellets no matter what I do. I think the my boys eats some of the pellets, but I know they pick the seeds out a lot. I think I might switch brands. I use Lambert’s cockatiel pellets.

As far as switching perches, I think that's an individual decision. I switch my tiel's toys around every time I clean them. I also switch toys from the boys to the girls and the girls to the boy’s cages. It doesn't stress them out because the toys are still familiar. If I was you, I'd switch them and see if Dawn looks stressed. If not, then switch them often.