{"User":"@Marea94","timestamp":"2021-10-13 13:54:06","link":"ansr.ly/1f3de8&Marea94","answer":"Ostriches do not have the keel in their flat breastbones. keel anchors the strong pectoral muscles required for flight. Their wings cannot lift their heavy bodies off the ground. Their feathers are weak making them unable to fly.But this bird has strong long legs it can run with a top speed of over 40 miles per hour. They rely on their ability to run or swim and have evolved from their flying ancestors.Ostriches have got wings, they hold them out to help them balance when they run, especially when they suddenly change their directions.  Birds like emu, cassowary, rhea, kiwi, and penguin have also got wings but they cant fly.  "}