What's the difference between a flightless bird and a feathered dinosaur?

@paul314 - One is a reptile.

@paul314: 40 million years?

Username, Dinosaurs being reptiles is no longer the scientific consensus: https://www.activewild.com/are-dinosaurs-reptiles/

Reptiles are classified as being cold blooded, and there is no way T-Rex was cold blooded.

Nelson Hyde Chick

Reptiles are an incomplete group then, since dinosaurs and birds are their descendants. I do see birds being considered reptiles in a lot of places.

Another attempt to thwart Creation.

ummm... "experiment" is anthropomorphism

Hmmm, died out about 50,000 years ago about the same time Australia Aborigines arrived in numbers in Australia. Which, due to the fact that the Aborigines actually have a name for these creatures, probably is why they went extinct. "Tastes like Chicken"

Answering the "Paul314":

Actually, birds are dinosaurs. They're included in the same phylogenetic taxonomy, so they still being dinosaurs and you probably eat dinosaur as lunch (we call it chicken).

@Nelson Hyde Chick T-rex didn't have feathers for one thing. That some dinosaurs are no longer classified as reptiles doesn't mean none of them are.