Theory of Flightless Birds Shot Down
When you buy through links on our web site , we may earn an affiliate commission . Here ’s how it works . Ostriches , emus , kiwisand other winged non - handbill might seem to be birds of a feathering , sharing similar evolutionary origins , but the story could turn out to be much weirder , with perhaps legion flying ancestors . This group of birds , called ratite , has been viewed by biologists as part of a gravid group ( paleognaths ) of mostly out birds that are key to understand the former evolution of birds ....