It's just a sign that this is still such new knowledge that a consensus hasn't been reached yet on the terminology. Some people think birds are distinct from di

It's just a sign that this is still such new knowledge that a consensus hasn't been reached yet on the terminology. Some people think birds are distinct from dinosaurs. Others think they still are dinosaurs. It just depends where people draw the line. So yes, they're both right, depending on your definitions of "bird" and "dinosaur".