i was reading in one book that there are benefits to having a separate roost cage...a small cage to put your gray in a night...on car rides...trips to the vet..the book says the grays should get 10 to 12 hours sleep a night...seems like it could be easier for sleep in a small cage because you could bring the cage in your bed room ...a place where guests wouldn't interfere...anyone using these cages? thanks....billy