If Ucodogen is correct, I am believing, who ever was identifying these birds was careless(profit motive) or incompetent or it really isn’t possible to identify live birds by sex to 95% when they are a day old. I didn’t bother to further my non-existent skills at home. I took good care of them. They got big. They all started crowing (except Ginger and Maryanne).
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With care, I believe it is possible to sex at 95%. But they sex thousands a day. So let’s say 1,000 would mean 50 roosters and 950 hens. If we separate them into 10 slices of 100, odds are good that there will be a couple slices with one or two roosters, and a few with many more, say eight or nine. If there’s any selection bias, for instance, males might be more or less active, then your results aren’t so surprising.
What is surprising is that your neighbors are going to be happy listening to your roosters crowing day and night, just to provide two hens with company. I lived in a neighborhood with chicken keepers, and the roosters either had no time sense at all or didn’t give a damn.
