Welsummers are Red Duckwing, not actually partridge. Duckwing has the classic chipmunk striping.I’m never sure about color vs pattern. Is partridge a color and duckwing a pattern? I thought Welsummers were partridge as well.
Red JungleFowl Chick as example.
Partridge Chick down is irregular stripes, with broken head stripe. Sometimes solid brown.
It's variable depending on all the genetics the partridge bird has.
Both are colors, partridge has penciling/lacing in the breast of females.
Duckwing/Wildtype