If you want to breed a white canary and a yellow, It is possible as long as the type is the same. such as: Specked white Canaries can breed with speckled blue Canaries or even yellow you know.
feb, just when the day light hours increase to 12 hours of light, so you can just turn on the lights for 12 hours or more and cover them at night for 8 hours or so, this way they're gonna think it's...