bird evolution

Suffering from meteorite disaster but why dinosaurs are extinct, birds are not?
About 66 million years ago, a giant meteorite hit Earth, wiping out three-quarters of all organisms on Earth, and warming the climate for 100,000 years.
The oldest feathers of dinosaurs appear on rocks
Scientists recently claimed to have found the fossil of a feather dinosaur dating back 160 million years, the world's oldest.
Meat-eating dinosaurs acted like bird's nest
From fossils, US scientists say they have discovered a small North American dinosaur quite similar to birds and has a similar way of hatching birds.