Various, The Journal of the Maine Ornithological Society…
“ At night, though in the full glare of the electric light, Cedric is ready to settle down to quiet, and when asked if he is ready to go to bed, he will flutter all his feathers and snuggle up in a corner, when we cover the cage with a paper and bid him "good night." If offered food at night he snaps his bill at us and makes an indescribable little querulous sound in his throat and will peck at our fingers if we continue to annoy him. ”
