Britannica Sources used in this answer

Which galliform bird is the heaviest member of the order?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

A peacock stands with its vibrant green and blue tail feathers fully fanned out in display, showing eye-like patterns across the plumage. — Galliform Blue, or Indian, peacock (*Pavo cristatus*) displaying its resplendent feathers.

The heaviest member of the order Galliformes is the common, or wild, turkey (Meleagris gallopavo). Wild specimens of this species can reach weights of up to 11 kg (approximately 24 pounds). While domesticated strains of the common turkey may grow significantly heavier due to selective breeding for meat production, the wild turkey remains the largest representative of the order in its natural state.12