7. Ostriches are the world's largest and heaviest living birds. At birth they weigh about 2.5 pounds. By the time they are 2 months old, they weigh about 20 pounds. 3) How many times as much do ostriches weigh after 2 months as they do at birth?

At birth, ostriches weigh about 2.5 pounds, and after 2 months, they weigh 20 pounds. To find out how many times heavier they are at 2 months compared to birth, you simply divide their 2-month weight by their birth weight: 20 pounds ÷ 2.5 pounds = 8. This means that ostriches weigh 8 times as much after 2 months as they do at birth! Ostriches are not just impressive for their size; they are also fascinating creatures! Known for their impressive running abilities, these birds can sprint at speeds up to 45 miles per hour and maintain a steady pace of around 30 miles per hour over longer distances. Their long legs aren't just for show – they are adapted for living in open savannahs, where speed is key to escaping predators. In addition to their speed, ostriches have a unique way of communicating. They use a range of vocalizations, such as booming calls and hissing sounds to communicate with one another. This vocal ability is particularly important in the wild, where they live in groups for protection against threats. Plus, let's not forget that their big, fluffy feathers help attract mates during the breeding season, making them quite the entertainers in their natural habitat!