Brilliant. Thank you so much. Great help.If they're three months old, then they're definetly all pullets. Pullets and hens will occasionally squabble to define the hierarchy, or pecking order, in the flock.
Here is how you can tell the difference between a male and female at this age.
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Barred is a pattern of color on the feather. Barred Rocks, like this one, is a barred bird. So is a cuckoo marans...
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