Check the comb and wattles: males usually develop larger, redder combs and wattles earlier
Look at feather shape: males often have pointed hackle and saddle feathers; females usually have rounded feathers
Observe tail feathers: males may have longer, curved sickle feathers; females usually have shorter, straighter tails
Watch body stance: males tend to stand taller and more upright; females are often rounder and lower
Listen for crowing: males may crow; females typically do not
Note behavior: males are often more assertive, while females are usually calmer
Examine spurs: males usually develop spurs earlier and more prominently
Check egg laying: females lay eggs; males do not
Look at vent sexing by a trained expert: this can identify chicks shortly after hatching
Use DNA sexing for the most accurate early result
Wait for maturity if unsure: many sex traits become clearer as the chicken grows