Your chicks' fluff should slowly disappear as mature feathers grow. Chickens will usually be fully feathered by 5- to 6-weeks of age. Their wattles and combs should also start growing larger and becoming a deeper red.
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The feathers continue to mature and the growth starts to slow at around 16 to 20 weeks ...
Sep 5, 2007 · Shiney cockerel feathers start to show up in the early developing males. 7 weeks on: Nothing is predictable, they develop individually. 6-9 ...