Zebra herbs, twigs, leaves and bark. Their digestive systems allow them to subsist on diets of lower nutritional quality than that necessary for other herbivores. Female zebras mature earlier than the males, and a mare may have her first foal by the age of three. Males are not able to breed until the age of five or six. Mares may give birth to one foal every twelve months. She nurses the foal for up to a year. Like horses, zebras are able to stand, walk and suckle shortly after they are born. A zebra foal is brown and white instead of
Zebra finch female zebra finch can distinguish its own eggs on the basis of odour. This method of distinction arises from the visual similarity between parasitic and non-parasitic eggs, and the cost associated with raising an egg other than one's own. When a bird is parasitized during a nesting attempt, it is less likely to be parasitized again during that season and, at the very least, during the next season (although this could be statistical noise). Young zebra finches fledge about 17 to 18 days after hatching. They feed themselves by around 35 days after hatching, although they are still socially dependent