Like other breeders,I keep a breeding notebook or breeding records book.Now days the computer can be a great help here too. I keep the records from year to year,but rarely need to refer to mating information over three years old,however I do not through them out,in case I need to look back farther.
Each year I write down all the birds in a mated pen.All my birds have numbers,either wing tags or leg bands,sometimes both. I wing tag each chick,write down each chicks down color and color shade,markings or spots,color and size of egg it came from,if deformed chicks appear that is noted for the mating. The chicks are followed all during growth and as adults with the same number (sometimes a number is replaced but noted).I go through all the chicks about every three weeks,with the sheets I will mark any disqualifications,health issues,color,sex,size,etc. I will note white,or black in tail or wings,sometimes undercolor,back markings or red shoulders.Sometimes it appears that a bird will outgrow white or black.It can happen,but is rare.What I find is it is the defective color is reduced in the final adult plumage,upon very close inspection in direct sunlight,you can still see traces of either white or black as they had when juveniles.My point is, young chick color is a great indentifier of defective color and you can make better matings knowing these color tendencies.Yet another selection tool for buff color,if we will only closely observe and use. Dan Honour