I have 2 barred rocks 2 silver grey dorkings and 1 SG dorking ISA red mix
they are all just under 3 weeks old
BR 1 aka MIDNIGHT which had the darkest markings at first black legs, black tipped beak, very little yellow on top of head:
BR 2 aka STAR had the lightest coloration black legs with yellow patches, large yellow spot on head, yellow beak:
D1 aka TWILIGHT had a continuous brown stripe from head to tail when hatched with very definite point at the top of head markings usually has tail held down
d2: aka MOON had a broken up splotch on head and a strip down back. down was much more grey than the other chick.
And the mix: aka SUNNY 100% yellow chick now has some grey specked feathers coming in on the back of neck. feathers are coming in light yellow and white comb is larger than it was 2 days ago.