Birds are just one lineage of dinosaurs that happened to survive to the present," mentioned Julia Clarke, a paleontologist at North Carolina State college and the North Carolina Museum of natural Sciences.
The smallest hummingbird is the bee hummingbird (Mellisuga helenae), which is found only in Cuba. Measuring simply over 2 inches (5 centimeters) long and weighing less than 0.07 oz (2 grams), these teeny-tiny avians are typically wrong for bees.
In Mongolia's Gobi desert in 2007, Clarke and her colleagues discovered a 2-foot-long (70 centimeters) dinosaur, Mahakala omnogovae, which lived about eighty million years ago. An additional dinosaur courting to the Cretaceous interval (between 146 million and 65 million years in the past), a tiny, thick-headed plant eater called Micropachycephalosaurus, additionally measured 2 ft (70 cm) in size.
And a few dinosaurs have been even smaller than that.