Johann Matthäus Bechstein,
The Natural History of Cage Birds
“ I have had a pair six years in my room without a cage, and they are satisfied with the food common for other birds: if kept in a cage, they must be fed on hemp seed, oats, millet, rape, and poppy seeds. They appear much delighted whilst bathing; during the night they seem very uneasy, hopping and running about continually. Their strong and piercing cry resembles a loud whistle; their song would be rather agreeable were it not interrupted in a peculiar manner; it is a warbling mingled with some high noisy notes, descending slowly from shrill to deep, and a little strong and broken whistling. ”
