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That method works 100% of the time in feather sexable breeds where the males have been selected as slow feathering and females have been selected as fast feathering. Most hatchery stock has been bred for the sexlinked feathering trait. It probably works 85% of the time if you have some birds with the feather sexable genes, and some birds without. LOL It just tips the average over 50/50.
That method works 100% of the time in feather sexable breeds where the males have been selected as slow feathering and females have been selected as fast feathering. Most hatchery stock has been bred for the sexlinked feathering trait. It probably works 85% of the time if you have some birds with the feather sexable genes, and some birds without. LOL It just tips the average over 50/50.