Partridge Brahma 6 weeks chest Bare
Being that slow to feather I'd start to wonder if it's a she. By 6 weeks the feather color will let you know sex with penciled birds.
Is the larger one the bare chested? That would make sense to me and suspect it cockerel. My Silver Penciled cockerels are getting black at 5 weeks of age, the pullets in this line are showing penciling at 3 weeks.
Brahma are slower to mature but your gold penciled will follow this basic trend. Males turning brown, slower to feather and pullets showing signs of penciling- gold penciling being lighter color than brown of males.
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