What makes flightless birds flightless

If you look outside on almost any day of the year, you'll likely see a variety of birds in your backyard. But with the exception of a few of the most common ones, you might not know what types of birds they are. Fortunately, it's easy to le. How (and when) did dinosaurs evolve into birds? What were the first feathered dinosaurs? And how did paleontologists manage to piece together the dinosaur/bird puzzle? Find out everything you need to know about dinosaurs and their relations. There are many miscellaneous birds that don't fit into the larger categories. Learn all about miscellaneous birds at HowStuffWorks. Advertisement Biodiversity if an amazing and wonderful thing. But it also means that there are many types of.