Takes a book or a classroom for me. I use a number of books, the easiest for some answers is: GENETICS OF CHICKEN COLOURS the BASICS by Sigrid van Dort--in Dutch Language or English translation, by Sigi, with David Hancox. Expensive, worth it. From the US, can order via Jerry Schexnayder, jerschex@aol.com There is a website: www.chickencolours.com that gives the list of her books available in Euros--and top of the list is Jerry, in US,----- write to him. Check availability from Australian site on that page, save a lot in Postage (or search www.australianpoultryforum.com) Good luck

Edited by CJR (03/16/14 05:18 PM)