Study of dinosaur-era fossil shows how birds evolved
UK-based scientists have studied a 127-million-year-old bird fossil to understand how avians evolved in the age of dinosaurs. The specimen, amongst the smallest-known Mesozoic era bird fossils discovered, was from a chick measuring less than five centimetres and weighing about 8 grams, said researchers. The study found the bird's breastplate was underdeveloped, suggesting it was unable to fly.