My GCC, Kiwi, has never done this when I've been home, but on two separate occasions had my daughter (in tears) and my husband upset.....both called me at work!! Kiwi likes to go to the bottom of her cage and tear up the paper towels, and sometimes just hides....this is what I see. My daughter called me hysterical one day because she thought Kiwi was under her towels dead....my husband went through the same situation yesterday. They both claimed that they don't know where she is.......call her name, bang on the bars, shake the cage a little, pull the paper towels, open the door......nothing.......she appears "dead"!! She then rouses and is perfectly fine. It, according to my daughter who has now experienced this a few times and stopped freaking out, seems that she is in an extremely deep sleep!!??!! What is this behavior....has anyone had this happen??