Canary birds : how to breed for profit or pleasure an exhaustive treatise on all the different breeds with chapters on pairing, colour, breeding, feeding cages, nesting, egg food, sanitary measures, diseases to which the canary bird is subject, &c., &c / by Karl Russ ; authorised translation.

Licence: Public Domain Mark

Credit: Canary birds : how to breed for profit or pleasure an exhaustive treatise on all the different breeds with chapters on pairing, colour, breeding, feeding cages, nesting, egg food, sanitary measures, diseases to which the canary bird is subject, &c., &c / by Karl Russ ; authorised translation. Source: Wellcome Collection.