This is a Silver Columbian Cochin chick that was posted on this site by lilcrow
The Columbian pattern in chick down is highly variable - and is highly depended on whatever modifiers are present in the parents. There is usually more black and irregularities coming from birds that are extended...
Well - I think what has already been said is a very good prediction of what one should expect under most circumstances. I would like to add a bit more, however....mostly regarding the extended black. It is my experience that extended black hides quite a few tricks up its sleeve....and when...