Note 54 — NATURAL HISTORY OF CAGE BIRDS. (continued 4)
Reading edition
It is a mistaken idea that the difference of colour in canaries depends on the difference of food. The wild birds vary much more than the domestic, yet their food is more uniform. The being domesticated, the want of exercise and natural food united, may occasion an alteration in the colours of the plumage. My birds have only very simple food, and yet they are not the less of various colours.—Author.