I'm not a club member, or a particular expert on CCL's, but I understand a bit about genetics. The gene for the crests seems to be partially dominant (a very common thing in chickens), so a small crest indicates the genotype is heterozygous, and that will not breed true. Very rarely does a standard endorse a trait that does not breed true (blue coloring, as in BBS, is the only example I can think of, and it's sometimes controversial for that very reason). So if a crest is desired in the standard, you should only work toward fully crested birds that produce consistent sized crests in their offspring. There may be genetic modifiers to make the crests smaller or larger, but don't include a non-crested bird in your program to get the crests smaller, that is a solution you cannot cleanly breed for, as non-crested birds will keep popping up.
That said, I believe we all keep these birds for the joy they bring us first, and foremost. If you prefer small or no crests, or gold instead of cream, or rosecombs, or whatever, there is no harm in breeding for the birds you like, unless you mis-represent them when distributing them to others. As long as you are honest about their show quality (or lack thereof), they can be great and popular chickens for many people.
X2 great insight! In the beginning we thought there was value in breeding an uncrested bird to keep crest size small but all it really did was propagate uncrested Legbars. We have since learned that if you want to show or have breeding quality birds they should all be crested. That does not mean that they will all be bouffant size though. If you continually choose your smallest crested birds to breed from then they will have smaller crests than offspring from larger crested parents. It will take a couple of generations to cull the uncrested gene carriers from your flock, if that is your end goal. If your birds are for your pleasure only it does not matter, but please take care in educating anyone who might get birds from you about the uncresting being present so they won't be surprised or angry with you if it pops up. Best wishes!
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