Researchers used the kind of techniques more commonly seen on the computers of construction engineers to ascertain the attack methods of the andalgornis, an Argentine paleontologist said.
They say the agile creature repeatedly attacked and retreated, landing well-targeted blows and using hatchet-like jabs to take down its prey.
"The analysis of specific parts [of the body] is the tool which comes out of engineering, to test the resistance of specific structures of importance to man in construction. Its appearance in biology and paleontology is relatively recent. However, it has resulted in something new and it has been applied to a great diversity of organisms from dinosaurs to mammals," said Argentine paleontologist Federico Degrange.
The multinational team of scientists using three-dimensional X-ray scans and advanced engineering methods documented the structure of one bird's skull, thought to be six million years old. They even worked out its main strengths and weaknesses.