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Fred N. IN VIEW of the difference present in the shade of the adult plumage of the Barred Plymouth Rock male and female it was thought there might be a difference in the size of the head spot in the male and female chicks of that breed.

It was also thought that a difference might also exist in the shade of the down color of the two sexes. Therefore an attempt was made in using these criteria to sex the chicks. Those having the sex.com head spots along with paler down color were recorded as males, while those having the smaller head spots and darker down color were recorded as females. After secondary sex characteristics gave a reliable www.auto of sex the original sexing was checked from the recorded band numbers. This check showed the day old sexing to be approximately 75 percent accurate.

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Auto-Sex Linkage in the Barred Plymouth Rock* | Poultry Science | Oxford Academic

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