Aristopet Red Colour Enhancer promotes red colour in the plumage and feathers of Red Factor Canaries and colour variations in Yorkshire and Norwich Canaries. For best results, Red Colour Enhance should be used before and during moulting and while chicks are growing their first feathers. Red Colour Enhance can be given safely throughout the year. It is quite normal for droppings to become red and no harmful effects will occur with overdosage except the plumage may tend to become dull.