Yes ostrich can survive winter. In fact they are quite well-adapted to cold weather and can even withstand temperatures below freezing. The key to their survival is their plumage which is both dense and insulating. Additionally they have a layer of down feathers beneath their outer feathers that helps to keep them warm. Ostrich also have a relatively high metabolic rate which helps to generate heat.
How does an ostrich stay warm in the winter?
The ostrich has a layer of feathers that help protect it from the cold weather.