Wait until the chicks are at least 6–8 weeks old for more reliable sexing
Check breed-specific sexing traits, since some breeds are easier to sex than others
Compare comb and wattle development; males often develop larger, redder combs earlier
Observe feather growth; in some breeds, males and females feather in differently
Look at leg thickness and stance; males may appear more robust
Watch for early behavior differences such as crowing, mounting, or dominant posturing
Use vent sexing only if trained, since it requires skill and can injure chicks if done incorrectly
Use DNA sexing from a feather or blood sample for the most accurate early result
Ask the hatchery if the chicks were sexed before purchase
Consult an experienced poultry breeder or veterinarian if unsure