Ana Grey has always slept on her cement perch, the highest place in her cage. When she is tired she zips up there. If she is still up when I decide she should be sleeping, I just tell her nite, nite and she goes to her sleep perch no problem. I don't cover her cage I just turn off the lights and shut the door. I would love to see Argyle sleeping, that must be such a cute/funny sight!!!