Found via The Big Picture.
Protofeather fossils discovered entombed in amber from the Late Cretaceous era support theories of dinosaur and avian evolution -- and make for one beautiful gallery
Dinosaur and bird feathers preserved in amber from a Late Cretaceous site in Canada reveal new insights into the structure, function, and color of animals that date back to about 78 million years ago.
Researchers led by University of Alberta paleontologist Ryan McKellar say these specimens represent distinct stages of feather evolution, from early-stage, single filament protofeathers to much more complex structures associated with modern diving birds. After analyzing the preserved pigment cells, the authors add that these feathered creatures may have also had a range of transparent, mottled, and diffused colors, similar to birds today. They can't determine which feathers belonged to birds or dinosaurs yet, but they did observe filament structures that are similar to those seen in other non-avian dinosaur fossils. Their findings appear in the current issue of the journal Science.