Description The common ostrich is the largest and heaviest living bird. Males stand tall and weigh , whereas females are about tall and weigh .Del Hoyo, Josep, et al. Handbook of the birds of the world. Vol. 1. No. 8. Barcelona: Lynx edicions, 1992. While exceptional male ostriches (in the nominate subspecies) can weigh up to , some specimens in South Africa can only weigh between .Urban, Emil K. "Roberts Birds of Southern Africa." (2007): 1104-1106. New chicks are fawn in color, with dark brown spots. After three months they start to gain their juvenile plumage, which is steadily replaced by adult-like plumage during their second year. At four or five months old, they are already about half the size of an adult bird, and after a year they reach adult height, but not till they are 18 months old will they be fully as heavy as their parents.
Description The common ostrich is the largest and heaviest living bird Males stand tall and weigh  whereas females are about tall and weigh Del Hoyo Josep et al Handbook of the birds of the world Vol 1 No 8 Barcelona Lynx edicions 1992 While exceptional male ostriches (in the nominate subspecies) can weigh up to  some specimens in South Africa can only weigh between Urban Emil K "Roberts Birds of Southern Africa" (2007) 1104-1106 New chicks are fawn in color with dark brown spots After three months they start to gain their juvenile plumage which is steadily replaced by adult-like plumage during their second year At four or five months old they are already about half the size of an adult bird and after a year they reach adult height but not till they are 18 months old will they be fully as heavy as their parents