中华丽羽龙可以抓到飞的猎物

University of Alberta researchers found evidence that a feathered, but flightless dinosaur ¹ was able to snag（抓住机会） and consume small flying dinosaurs ². The U of A paleontology team found the fossilized remains ³ of three flying dinosaurs in the belly ⁴ of a raptor-like predator ⁵ called Sinocalliopteryx. Sinocalliopteryx was about two meters in length and roughly the size of a modern-day wolf., ,Sinocalliopteryx's flying meals were three Confuciusornis. Confuciusornis was one of the earliest birds and had a crude version of a modern bird's skeleton and muscles. The researchers say such primitive ⁶ birds were probably limited to slow take-offs and short flights., ,According to the researchers, this is the first time a predator has been linked to the killing ⁷ of multiple flying dinosaurs., ,Scott Persons, a U of A paleontology student and research coauthor, says Sinocalliopteryx may have used stealth to stock the flyers. "Sinocalliopteryx didn't have wings or the physical tools needed to be an adept ⁸ tree climber," said Persons., ,Persons explains Sinocalliopteryx had feathers or hair-like fuzz covering its body creating a level of insulation ⁹ that helped maintain a warm body temperature and high metabolism¹⁰（新陈代谢） that required a lot of food to fuel., ,"The fact that this Sinocalliopteryx had, not one, but three undigested birds in its stomach indicate it was a voracious¹¹（贪婪的） eater and a very active hunter," said Persons., ,This find was made in China's Liaoning province, and U of A researchers analyzed ¹² stomach contents of a second Sinocalliopteryx fossil discovery from that area. The researchers identified this Sinocalliopteryx's last meal as a Sinornithosaurus, a small feathered meat-eater about the size of a house cat that may have been able to fly or glide ¹³ short distances., ,"Sinornithosaurus is a relative of Velociraptor which means this is the first direct evidence of a raptor becoming another predatory dinosaur's meal," said Persons.