I never realized before I got my duckling that they do have brains lol. I let my Zesty on the floor of the room while I clean his cage and re line newspaper etc, and today when I put his fresh water and food in he walked over and jumped right it. I always put him back in after I place the food and water, I dont know if he went in cause he wanted the food, or if hes just learned that its time to go back in, but I like to think hes smart