I would like to add that I have had some that do not follow the rules at all. The first time I raised chickens I had 10 barred rocks that I got at about 8 weeks of age. I knew one for sure was a rooster, but I had no other roosters so I wasn't too worried about the one. He was much brighter and his barring was thinner and his comb and waddles were twice the size of the 9 others. However, one day collecting eggs, I had ten eggs. Thought for sure I had missed one, and then again the next day 10 eggs....turns out my rooster was just a gender confused hen.
Edited because I obviously cannot do simple addition.
Edited because I obviously cannot do simple addition.
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