The Topaz Factor — Part 17.
The topaz factor is said to have originated and developed in France, from black-red phaeo. The name, just like opal, refers to a type of gemstone. The topaz is undoubtedly an asset to the color canary hobby.
We distinguish between "full" topazes — topaz for short, the actual mutant — and the intermediate topaz as a backcross between topaz × phaeo. But the intermediate form can and should never be recognized: they are and remain intermediate crossing products for both color and markings.
Premium article
This article is available to subscribers
Subscribe and read all articles by Wout van Gils on keeping and caring for colour canaries.
