The Columbian neck pattern is called striping, the Dels ticking is gradient barring, the hens neck pattern per the SOP is called stippling these terms are all described in the first pages of the SOP and good to know if someone is going to be breeding seriously or upgrading toward perfection J/S
The one on left is more of a Columbian Pattern- the one on right is what I call Del ticking pattern . I,m sure there are more technical names but thats what I call it. That
is not a extreme Columbian pattern but I thought the side by side was better for comparison.
Now off topic I need opinion
Critique this cock at 19 weeks
The male posted is ok but a little high in the tail section if you have one that has a lower tail I'd use him for a breeder the one posted would be good to look at in a sea of layers but not to carry forward with this project as Mrs. Kathy stated these projects (even though it is F4s already) are still having to get there from here stage. Good luck I hope to be joining in on this movement soon.
Jeff