Because modern dinosaurs are flying all around us, examining them closely can offer new insights into the lives of their fossilized ancestors. The hypothesis that there is an evolutionary link between dinosaurs and birds was first proposed in the late-nineteenth century. Though initially welcomed the suggestionwas later disregarded. However, this has all changed in recent decades with the recent discovery of a number of feathered dinosaurs in China. The similarity can be clearly illustrated when you compare the dinosaur ornithomimus with the modern ostrich.