Above are examples from my Eastern Wild Turkey of 2 weeks ago.
Left: Primary Wing Feather
Middle: Secondary Wing Feather, commonly referred to as a "Round"
Right: A Mottled "Round". Commonly referred to as a "Mottled Quill". Same as the round but lacking the defined natural barring.
Domestic birds are the same, but are all white and dyed their desired colors, including imitation "barring" & "mottling".