It only requires one factor to display itself. So regardless of what the pattern underneath the spread is, a recessive opal with one or two factors for spread will show recessive opal spread. The birds shown here are Spread Recessive Opal on blue bar. Opals in my loft are the bar pattern with most masked by spread. I am looking for some in the check pattern to swap but haven't found any.
Crossover takes too long and results in to many extra birds to feed.
Copyright 1999 by Ronald Huntley. Permission is granted to download or copy for non-commercial individual use only. The author retains all other rights under copyright.