Males usually have brighter colors and sing more compared to females.
Anonymous Answered question 6 days ago
Males are often more aggressive and territorial. If you see your finch chasing others, fluffing its feathers, or acting dominant, it is likely a male. Females are generally calmer and more passive. However, during breeding season, females may also show aggression if they feel protective of their nest.
Anonymous Answered question 6 days ago