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Hens lose the barring on the back feathers and the cocks retain it. You can also look at the individual feathers on the back for either multiple bars or single bars. Hens also have that white/cream colored scalloped tips on the feathers on the front of the neck.
When posting pics of birds and especially when you want an opinion on sex or color it is always best to crop the pic before posting. Yes, we can blow it up but far away pics get fuzzy so cropping helps us a lot.
That said you have at least two hens maybe three, but I am leaning on a trio of...